Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f12ac46c308d5d6…

MALICIOUS

PDF

205.0 KB Created: 2021-07-13 06:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 82a48dc63c53fe32f637b3b25af23b2c SHA-1: 9934763a20afc168147025dcc4c4416b2caf10b6 SHA-256: 0f12ac46c308d5d665c4ae83edd29757ef55c9aeffaa6544db85f4fa35b034ec
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URLs and the PDF link farm heuristic indicate an attempt to redirect users to compromised WordPress sites, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the nature of the PDF and the embedded links suggest it may contain JavaScript for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9819

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
  • 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.
  • 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://crewmak.ru/uplcv?utm_term=mr+grinch+song+tyler+the+creator PDF link annotation
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dbe7497e4d---nolumuvulov.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/21404204573.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/2027a3acd048da73e7add4e65f568d08/latefup.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/6817fd21bd7a717517b2a328d7bacfc7/53019332814.pdfIn PDF document text
    • http://www.donboscovizag.org/images/files/mirojagixeponebizu.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/nunufesunonofetajisixed.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/d9q3qfjv5oldg5ma1s87l3o983/pexusinirutesivibuketabeb.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e35ef120ecf---gepijegavawili.pdfIn PDF document text
    • http://fqcycpa.com/jingkelun/userfiles/files/20210623034807.pdfIn PDF document text
    • https://aspirans.com/files/file/92616392118.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/07/03/file/29432447178.pdfIn PDF document text
    • http://logisticsnetworks.net/ckfinder/userfiles/files/84215265322.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160865da8b1f29---fanebuzezowaxob.pdfIn PDF document text
    • http://hrdiborice.cz/erucom1/files/files/53031984992.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ba5b1d995c0---xikereposewijipe.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c928e6753db---69331277314.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/841c81706d990cb1ec1da9827be85e96/83715204627.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/50080483592.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/48df0q2rd1uu3c72e0eg5fng5m/69919606210.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f3a5040cc---90159303167.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b04bf3ac79---tomapoxumujijujixukixub.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/gr9ajj3emp4sklmhbj4comhi7p/nuwebap.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/90aog1llo64c1mj5v089l5o6l6/fafawopitowupaju.pdfIn PDF document text
    • http://patokapugsnkisses.com/clients/61143/File/gulub.pdfIn PDF document text
    • 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_off0002c358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C358 19276 bytes
SHA-256: 0b9225917fd9de4bb6245174373d16c95ef421977b6c901a01f3e895b1297f84
font_01_sfnt_off0002f57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F57D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00030d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D94 10616 bytes
SHA-256: b7426e6c6e3179c288b32fee55ca061a7ff2b376887e26f07a1f6474f3ca56ec

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