Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27489d8e9957469…

MALICIOUS

PDF

131.0 KB Created: 2021-02-22 11:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ed2544052f961664d8390bb4ebde0a15 SHA-1: 7788d3b0566b80a64598bf2984a04b24e30bb903 SHA-256: e27489d8e995746960c6e326219db59f7ab0e58954338c77eb7bc417c38e0204
116 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. Heuristics indicate it's a callback phishing lure, prompting users to call a phone number in a deceptive context. The embedded URL 'https://seumenha.ru/strik?utm_term=plane+shift+zendikar+5e+pdf' is likely part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/strik?utm_term=plane+shift+zendikar+5e+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455914/normal_60011589bb901.pdfIn PDF document text
    • http://graatorama.space/judith_butler_gender_performativity_bookflch7.pdfIn PDF document text
    • http://voztrans.ru/23092081167hl5hj.pdfIn PDF document text
    • http://wiinorama.website/487925746139gn9w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_6019948e1e9aa.pdfIn PDF document text
    • http://kyponnik.online/example_base64_stringj6qbs.pdfIn PDF document text
    • http://sdek-24.cc/tupuvusfk1k.pdfIn PDF document text
    • http://indital.fun/28066353092l1pvs.pdfIn PDF document text
    • http://igonlinesupport.com/sofia_battle_arena_toshinden_gifaze5d.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/wegemebufojafak/57976997702.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/jammu_university_distance_education_date_sheet_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/11798302115.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/up_anganwadi_online_form_official_website.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/54724919398.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/coffee_shop_music_free.pdfIn PDF document text
    • http://lejibop.rf.gd/56615204699.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/free_printable_abc_worksheets_for_pre-_k.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/mga_bulong_at_awiting_bayan.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/jhin_guide_probuilds.pdfIn PDF document text
    • http://valajawegob.epizy.com/pufupexiloxezefozinizunog.pdfIn PDF document text
    • http://jimanujomubil.epizy.com/oracle_coalesce_vs_nvl_performance.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_off0001c4cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C4CC 5368 bytes
SHA-256: 3d3de279e7a0b3b668724960e960abd7104006e1c7e1a83eae3b2ca9535a6d96
font_01_sfnt_off0001d718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D718 11032 bytes
SHA-256: 7251aaee33c23540bc910985f2ed52d1a68ffcacaecfcb37008153cd908ac50a

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