Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1eb9dbdc920de37…

MALICIOUS

PDF

98.2 KB Created: 2021-07-20 13:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 9912c5cfeccba2ef56f29aad895da684 SHA-1: b94c4a549fe44ca3c156d51df4ba748cfdbbdc1e SHA-256: e1eb9dbdc920de37a96bb8a13ffac4e5e8558a824657a9752413d2b5edf0b8fd
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised websites, suggesting an attempt to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with phishing and malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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
  • 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://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/pvisq1innfiv76q1rb1r1oehsf/fojogajoxinofaruju.pdf In PDF document text
    • http://taxicityplus.ru/userfiles/file/putazege.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/telawezokoxopup.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bda74713adf---23673215950.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160867b9caaea0---wigilup.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609afcd588377---97548299053.pdfIn PDF document text
    • http://biosurfest.com/userfiles/files/97607745489.pdfIn PDF document text
    • http://trans-serwis.com/userfiles/file/fugugopewawimalula.pdfIn PDF document text
    • http://cooper1972.com/clients/b/b4/b451ebb09e7e0345645526f893d9a49e/File/7979820244.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d3861ccf04db9d2c21e56aee516a2361/51417911432.pdfIn PDF document text
    • https://cooperspick.com/files/xewerug.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/0djhm7i7fr4m0qiej7bpagagrk/fenolejafe.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/files/8905581125.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/jirewajolirojafewiripexov.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/38942009460.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/4c2bd1e1870aa537bd1222944c30a823/56387358009.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073bc73069d2---30928453323.pdfIn PDF document text
    • http://1night2day.com/ckupload/files/44936054229.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/1a0218769bc4784c09882736f796c315/53028937035.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea55632073---54353647730.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/d116cf029adbbcb994594f8c2cf4cc45/82945154382.pdfIn PDF document text
    • http://93564497.com/userfiles/89271950573.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c404ab6bec7---46877505838.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160819098a0a86---jatavikujogu.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6e9dd4b99---78234558308.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=parco+supermarket+offersPDF 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ACE 18188 bytes
SHA-256: b808d1743224e2ba162372049ebe6df5096cb5fd976761c3448f63f28c92627e
font_02_sfnt_off00014ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AE8 16892 bytes
SHA-256: 7bb558c053dc4e043e6ec2b99395c9865f054a5c24d8cc6c1cc1224a35179b35
font_03_sfnt_off000162a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162A8 10592 bytes
SHA-256: c1280588c26c27fd94a9ee3033b146eca3b6fae20852283f9db42203a8cca8a6