Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bdbb29891674be3…

MALICIOUS

PDF

81.6 KB Created: 2021-09-11 16:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 1ac9bf8a103e3594f9753299b28960f9 SHA-1: 5ac348908da43717bc6062aae3385993fc1dc9a5 SHA-256: 0bdbb29891674be39fc1113f489c5b66475a82822b560577c212cf118e43ff5c
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

The sample was detected as a malicious PDF by ClamAV and flagged by an ML classifier. The 'SE_MFA_LURE' heuristic indicates the document is designed to trick users into providing credentials or MFA codes. Numerous URLs were extracted, suggesting a phishing campaign aiming to harvest sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://greentreeprep.com/cote_dor_import/admin/ckfinder/userfiles/files/39744354753.pdf In PDF document text
    • https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/wojagalowowevajew.pdfIn PDF document text
    • http://kartelabasligi.com/images_upload/files/14821638817.pdfIn PDF document text
    • https://strings97.hu/userfiles/file/46089805106.pdfIn PDF document text
    • https://iqrainternationalschool.org/_assets/files/zotiwe.pdfIn PDF document text
    • http://www.armstrongre.com/files/files/fubesowomitoxug.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/juzakezeluvidalomamutawax.pdfIn PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/60858953747.pdfIn PDF document text
    • https://scavilecis.it/userfiles/file/39980611164.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161364b7d4948c---8712369750.pdfIn PDF document text
    • https://thuaphatlaihanoi.net/uploads/files/4039068431.pdfIn PDF document text
    • https://worldmedglobal.com/userfiles/files/ludulisufimijanej.pdfIn PDF document text
    • http://rayocazar.com/images/elfinder-1.1/files/file/36756427287.pdfIn PDF document text
    • http://turystyka.powiatlubartowski.pl/admin/ckfinder/userfiles/files/wematotenudemurepof.pdfIn PDF document text
    • http://devitohomesorlando.com/userfiles/files/89220422057.pdfIn PDF document text
    • http://danchrisjewelry.com/userfiles/file/dufonilotud.pdfIn PDF document text
    • https://mekongtransport.com/upload/userfiles/files/jixuvapitijalozerud.pdfIn PDF document text
    • https://ermolino.mebel18.com/uploads/files/dupupifexemuzasemozo.pdfIn PDF document text
    • http://zabbeleecooking.com/ckfinder/userfiles/files/3127776595.pdfIn PDF document text
    • https://academiapreprod.riportico.com/userfiles/files/rolefizukenakudasutupope.pdfIn PDF document text
    • http://staractivecollection.com/resimler/site/files/modejaru.pdfIn PDF document text
    • https://machnhaduong.com/images/uploads/files/panorapekewazusijuzufapet.pdfIn PDF document text
    • http://pushgroup.lv/userfiles/files/32349450717.pdfIn PDF document text
    • http://1night2day.com/UserFiles/file/34552113182.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=worms+zone+gameplayPDF 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_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 10572 bytes
SHA-256: 5738990911a9f30dcb6c721311ca90dedcc53062079ed7b75114c21c50dcf28b
font_01_sfnt_off0000f1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1ED 18036 bytes
SHA-256: 24b3c87f3628005253fb6affea8a959a6b37f154f64a4bf4f81be76bcb001388
font_02_sfnt_off00012103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12103 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1