Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c626e654b5f12b9…

MALICIOUS

PDF

67.3 KB Created: 2021-02-17 16:24:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d706e4b466bd72cae37d8e7c57cd2dbd SHA-1: 008fa819fcd3c541fcd821cf2a9ccafdd49bf779 SHA-256: 0c626e654b5f12b93285733b8c4da74cfd709e99b248951c932e08fd46dafe17
124 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that mimics a FedEx customer service chat link, suggesting a phishing lure. The document body, though partially corrupted, contains keywords related to FedEx and customer service, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wb?keyword=fedex%20customer%20service%20chat%20canada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408583/normal_6025ee13af6b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454821/normal_6009a4d0cc1af.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/iiVMmJK/american_game_show_guess_the_word.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_60040049e7ea2.pdfIn PDF document text
    • https://cdn.sqhk.co/zabeluzitema/fKhhggd/dashboard_switch_panel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467975/normal_60020c7ea163f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_600b356e3e393.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470679/normal_5ff5495bd7c2f.pdfIn PDF document text
    • https://cdn.sqhk.co/fujikapoji/V3pHegj/91090912890.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_6011d8fd88dc8.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/xijalovelokolep/fizeduwokibidavoma.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/94247172114.pdfIn PDF document text
    • http://zovewopot.epizy.com/kabitexumexuwagi.pdfIn PDF document text
    • http://benobex.epizy.com/dr_br_ambedkar_university_admission_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/28721631517.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/19064803791.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_off0000cacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCACB 5228 bytes
SHA-256: da03480d96fd6c6007612b7f6d4ae53b5c081bdf317f7c24aa03a96bb5e45196
font_01_sfnt_off0000dc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC75 10512 bytes
SHA-256: f41bd56547f94ebd62b3ebb20fde6f6ba1a71afefa82124f6d4fb12759e2d930

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