Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d05776688694cb…

MALICIOUS

PDF

50.9 KB Created: 2021-09-28 07:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 71d3b83887d8959c25a6ff1df1a5d633 SHA-1: 1ac04029c1cb151aff0ad4feee6faee0f5ebe2f3 SHA-256: 41d05776688694cb51eeaaa6b303bbfbb5fc157b4aee3bc77524ab0d871693cb
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The sample also exhibits characteristics of a link farm, with numerous links to disposable hosting, suggesting an attempt to obscure the final destination or distribute payloads. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6036

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/21c3f3870b836b42a7a4ca165b435113/bubukivik.pdf
    • http://touchpanelpro.com/upload/files/36819184634.pdf
    • http://allycatering.com/userfiles/51359813608.pdf
    • http://2222.netsociality.com/upload/files/gozewowapolebabuf.pdf
    • http://gldbirdgel.com/user_img/files/79001117368.pdf
    • http://musicandyouapp.com/webupload/editorimg/files/42051457301.pdf
    • http://dakov.hu/_user/file/gopulegom.pdf
    • https://www.blondel-bois.fr/ckfinder/userfiles/files/98499024428.pdf
    • http://rurisnet.org/images/file/metulawetak.pdf
    • http://ameshamagazine.com/js/upload/files/vexogutak.pdf
    • http://aytekinpolatel.com/image/files/75207905608.pdf
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/59307314243.pdf
    • http://packamate.com/userfiles/79875900741.pdf
    • https://eobliecky.sk/userfiles/file/subikog.pdf
    • http://aotem.com/data/home/qxu1780220113/htdocs/uploadfile/files/zamomepiguseros.pdf
    • http://moscowprice.com/content/xuploadimages/file/13097136345.pdf
    • https://ubranni.com/uploader/files/95589053490.pdf
    • http://petra-dario.info/upload/datoteke/fulibusafowapupoxo.pdf
    • http://gomientrung.vn/uploads/image/files/fosetizikobujidosidab.pdf
    • https://trainova.com/userfiles/file/11067230589.pdf
    • https://kungfuclasshongkong.com/louis/taichi/ckfinder/userfiles/files/tukixesawik.pdf
    • http://thechelseaff.com/user_uploads/files/mamow.pdf
    • https://thefencedocumentary.com/adminfiles/file/tirodinuxis.pdf
    • http://erbaytag.com/resimler/files/76080212779.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=one+piece+streaming+sites

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