Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a0cc1dd7d1a2c8f…

MALICIOUS

PDF

236.9 KB Created: 2021-06-20 19:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 345629234988b491a5373539314a3482 SHA-1: f43a1144638ef418ce397858a6570e9cb7d4482e SHA-256: 9a0cc1dd7d1a2c8f57243621bbbdfc07371780a5a93fb86d858bb60378a7c73b
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs social engineering tactics, including urgency and a fake download button, to trick users into downloading a malicious file. The presence of multiple links pointing to compromised WordPress upload directories and a ClamAV detection for 'Pdf.Phishing.Trojan' strongly indicate malicious intent. The document's content, though heavily obfuscated, appears to be a lure for downloading content, likely a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7095

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/170ei0na5gn93f9fs4g449oage/98219851977.pdf In PDF document text
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/3a1ece8e241ff9b8c9b557a19a5777bf/24999186925.pdfIn PDF document text
    • http://tasteofruraleurope.eu/upload/File/3883290102.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/970ola1dofmo53ar02bc81qmoe/59440187669.pdfIn PDF document text
    • https://zoomkish.com/basefile/zoomkishcom/files/koponusobaweduk.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a2fc43e936a---pimalafatuvopimiki.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/410d032c9f3d13d3557c9167e9a555ed/kebagejemozutuvewo.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ee863885f---berutajixavojibonuvul.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/49570963283.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/vuxubetajef.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bf7bdcc71dd---29634185708.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/775045cf978e2d2360d19e4a66029bb3/40924679494.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160730016ac575---fuzuzaje.pdfIn PDF document text
    • http://beergolfers.com./blog/images/file/39497505274.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b631dddc3---wagarirobabiroluzula.pdfIn PDF document text
    • http://ixtvs.de/_upload_bilder/_filemanager/file/tavozokifuzoxumexemu.pdfIn PDF document text
    • http://gotween.com/userfiles/file/%5C/32509925898.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f58fb7e15a---58871694373.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=amazing+spider+man+2+full+movie+in+tamil+isaiminiPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_010_off00036f7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36F7F 22428 bytes
SHA-256: ba3cf5efbb029a5063e32ab07ad9c7cc12a0560d3756ffc7744d187f6b3a2c27
font_00_sfnt_off0002d154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D154 6800 bytes
SHA-256: f52f259943e1bd4813bf8cd065cdaf26e4b75faec1acbe69fe24492f4917c9d1
font_01_sfnt_off0002e249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E249 4656 bytes
SHA-256: 0d8145923c0fbfd4bfa68213a1e08efbf275e5b83417b97deaa5c333283d4c80
font_02_sfnt_off0002f274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F274 5592 bytes
SHA-256: 6533276902f0e0ef6c349c155873604a0018926577fb5626ed8f7e4d60cfb195
font_03_sfnt_off0003056d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3056D 1752 bytes
SHA-256: 903633142124a27484a5cf984d171813d14a70775594169bfb72b97769c53441
font_04_sfnt_off00030e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E1D 10444 bytes
SHA-256: 3479aba329685ec8cb4f179b096b324f0f1ebb3c7eb2a89ef2a7a2f71b026b32
font_05_sfnt_off00032c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C04 24988 bytes
SHA-256: a8809e8f416b7a49f3638e01dc16187b03652567d37627d845ace3d98115bba7
font_07_sfnt_off000396b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x396B5 3016 bytes
SHA-256: 5dd1770f5725832f699807e98211f535943f3fa4a067b5b0e63cd9cc48407ca1

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