Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd64762b6ac7cddb…

MALICIOUS

PDF

156.1 KB Created: 2020-12-20 11:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a68e995970f4ad00725892ca44b3447d SHA-1: 5871cb0e3e9410d3b97b5c1fe7517006bf43dd15 SHA-256: bd64762b6ac7cddbd01343127fca51591e99812048407a7fa851188d8d2e83fc
182 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://traffine.ru/123?utm_term=motorola+minitor+vi+pager+parts'. This URL is presented within the document's body, suggesting a phishing or scam attempt to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://traffine.ru/123?utm_term=motorola+minitor+vi+pager+parts In PDF document text
    • https://static.s123-cdn-static.com/uploads/4496360/normal_5fcf8919808f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417138/normal_5fae6bf9558e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_5f99d2aa1023e.pdfIn PDF document text
    • https://nekekijubexofus.weebly.com/uploads/1/3/4/5/134587401/rubeki_dulopiji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449014/normal_5fde3618c0270.pdfIn PDF document text
    • https://junafoxotoroj.weebly.com/uploads/1/3/0/7/130738975/tamawawekonulenuf.pdfIn PDF document text
    • https://teduzagegoxow.weebly.com/uploads/1/3/4/4/134400331/gobegolosole-waxaxa-pudog.pdfIn PDF document text
    • https://denonifo.weebly.com/uploads/1/3/4/7/134709080/sidaketelip_suvunod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486535/normal_5fca70a0bb420.pdfIn PDF document text
    • https://kukotefuses.weebly.com/uploads/1/3/1/6/131637352/eb8f8.pdfIn PDF document text
    • https://miwunukeje.weebly.com/uploads/1/3/4/5/134524605/saxitetuxemifudukat.pdfIn PDF document text
    • https://lotogifivetizub.weebly.com/uploads/1/3/4/3/134309957/4813252.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449777/normal_5fc4ea8584b32.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdd29b3c66bff209e7fbc61/t/5fde15f56a6ad7222f0c3ed8/1608390133727/melhor_app_agenda_android_gratis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e335a5bc066edfa5a857/t/5fc34835e18c5c478e65332e/1606633527625/tipawezuma.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_off000226f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x226F8 5204 bytes
SHA-256: 9fa588fa8d61cd2338c704c8a0070375e4316e241f3bf8311b93f990dae5efda
font_01_sfnt_off000238a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x238A8 12424 bytes
SHA-256: 6b62fdea018ff257f520afcf772f641d698976e03ab6e03df0da2867078fd767

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