Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0e94a1eb798e7b…

MALICIOUS

PDF

79.6 KB Created: 2021-09-05 18:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 00c968eec0a526ba952317de1a9e58e5 SHA-1: 8245bee1da8fbb249037bac1735ed50fc6c7cc1a SHA-256: dc0e94a1eb798e7b2486ca3495010c058d6bdcacb57724b0d5fbc66df3ad0f8a
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating it is likely a phishing trojan. It functions as a link farm, containing numerous URLs that point to potentially compromised websites or disposable hosting, designed to lure users to malicious content. The presence of these links and the overall detection strongly suggest an attempt to trick users into visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://cl-metalparts.com/d/files/93769281318.pdf In PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/dc4ff8c06a9f15e227ec9dc39723c219/pimolibinedopexaw.pdfIn PDF document text
    • https://ottenburger.com/userfiles/file/72529348629.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/tunetalotigesodut.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/4097806814.pdfIn PDF document text
    • https://guruamardaspublicschool.com/userfiles/files/86454502701.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/c2ekaanhvlqr3u72k4n6lf5tgj/funovawubav.pdfIn PDF document text
    • http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/divepebegegivag.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/pvrv9oogp02d99fb8e4rpoj6b2/sovodadamoxemepina.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6d53548d1291f509edc43b8ebe5918a2/93443145469.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/43606505949.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607195dea6fe1---gatiwabakomik.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/361ed5ebe511af891893f4f2b72886e4/56006874758.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/6jg2epoc7uo40t07eajf38e7g2/ramepum.pdfIn PDF document text
    • http://fairway.cc/images/blog//file/direfokivatuwomejizoluli.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/vufojel.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/k2tnll9vfv1tgeb8g97lg7bh62/zisoxiti.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160755ffb89e68---pewupakejofu.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210905083232.pdfIn PDF document text
    • http://superplasticizer.cn/d/files/tonegifoz.pdfIn PDF document text
    • https://debo-fit.be/userfiles/file///97769008911.pdfIn PDF document text
    • http://ruihuitax.com/files/file/79915430771.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/464d6f9c578e79cc7e0b67cf4e3927dc/verunoxajen.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a81c4a0d41d---dojofi.pdfIn PDF document text
    • http://aedelsur.com/contenido/files/51056335812.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=atlas+de+hematologia+clinica+pdf+descargar+gratisPDF 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_off0000ce61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE61 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE673 19140 bytes
SHA-256: 9c47caf5b9b36ed2d8c8b59f83e046c21a6bf81818f46d251eae86f9029fd760
font_02_sfnt_off00011748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11748 11048 bytes
SHA-256: de833a6bf47e7ee92f2c07854e7406b0e44b363c40cd77f449708d8301de6d17

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