Malicious PDF — malware analysis report

Static analysis result for SHA-256 b793d863908db24e…

MALICIOUS

PDF

75.2 KB Created: 2021-01-16 18:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3020f0979e5ce75860af54b17ef25ea5 SHA-1: ec03981cce88bb3804f4c204c99f8d4514d6790c SHA-256: b793d863908db24eabb152ed6d08b82f1e77919116e70e919ad00eb99a9c92c1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, suggests a lure related to song lyrics, which is a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/123?utm_term=his+name+is+wonderful+lyrics+and+chords PDF link annotation
    • https://cdn.sqhk.co/zetanitanedo/W7iU6ya/100_years_love_with_a_vampire_new_orleans.pdfIn PDF document text
    • https://cdn.sqhk.co/wasusoguba/ihjjdgf/chain_reaction_2_sneakers_blue.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5ffb84a536907.pdfIn PDF document text
    • https://cdn.sqhk.co/wemojezuvegi/08Aiii1/eternal_card_game_review_switch.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/jpib2in/pafigogodizizifoni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372087/normal_5f908f02e945b.pdfIn PDF document text
    • https://site-1168029.mozfiles.com/files/1168029/riddles_with_answers_hard.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413867/normal_5fb702a247a39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408583/normal_5ff71a7771e74.pdfIn PDF document text
    • https://site-1188796.mozfiles.com/files/1188796/51677919166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419433/normal_5f9cda8bd240b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383704/normal_5fde78f81e867.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zetare/pumikix.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/hospitality_newsletter_templates.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 5416 bytes
SHA-256: e646ff8d4939ec549c206e96114eaaaaf7f86764065d9d3628801e5e58856413
font_01_sfnt_off0000fa57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA57 11160 bytes
SHA-256: de6c7e2078f1f7292b5df318ec337b25c1c9b86681d81dde21e7b8ad2651215f