Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29dcb1c5f7f8160…

MALICIOUS

PDF

82.5 KB Created: 2021-08-25 22:08:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 30d42030a863b14bd599ab6700f52482 SHA-1: a461e5af34365a1723a79d962b6e0a422cd95221 SHA-256: e29dcb1c5f7f81603940b36f7010266fea3c98685fc9d8fa0921b85c974c9f36
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites, suggesting a link farm or phishing lure. The PDF structure and embedded links are consistent with attempts to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d0f20e384---dojanixifesokulogimik.pdf In PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/73614e224088ecdc6389dbf889e23c5d/38350179702.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/zolufomu.pdfIn PDF document text
    • https://ssvacancy.com/ckfinder/userfiles/files/wasizenonabo.pdfIn PDF document text
    • http://kramnyca.info/img/upload/editor/file/10749307133.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dbb2cca1a8---masotijeziwaxamumabupo.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b59593102de---soninizediniberepizezeki.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/733riib7blc7j4v08mvo9rb925/lowogixixima.pdfIn PDF document text
    • http://high-keenltd.com/userfiles/file/22953973716.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/48314446660.pdfIn PDF document text
    • https://kimtuong.vn/isc/public/files/fckupload/file/jizipuban.pdfIn PDF document text
    • http://hongpakthai.com/ckfinder/userfiles/files/52918255397.pdfIn PDF document text
    • https://chmelo.hu/sites/default/files/file/31384832119.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/vetebufuvoborenarusazana.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611cef0c1c7c3---japinu.pdfIn PDF document text
    • https://www.nevjegykiraly.hu/userfiles/files/tumuxabe.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ca4e5905394---29653952658.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f9d9bb28fa1a8367e435e23e891923f9/rogebulazimotagixud.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/zuwasesonesogazubaranop.pdfIn PDF document text
    • http://shipsupply.ru/userfiles/files/zixidezokezasixirazisip.pdfIn PDF document text
    • http://sherwoodonionfestival.com/ckfinder/userfiles/files/4181428412.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b538f171b96---87835546188.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=the+cow+essay+in+english+for+class+5PDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000def3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF705 16716 bytes
SHA-256: 465761ff68bf8b94a9481d3a417a77b145b52def2bab39706d736d5513dd91f4
font_02_sfnt_off00012224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12224 10816 bytes
SHA-256: b7af0ef3102e31d4af11ab6ac4657a217c1f017ad9bd79fd64a89f46516c63c6

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