Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb5e51fe4af2a3b…

MALICIOUS

PDF

67.3 KB Created: 2020-12-17 03:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 96f0124c5fee88c158f4c082e1318589 SHA-1: 474f1290a46616caf12f50cd2190e38f900addf7 SHA-256: ffb5e51fe4af2a3bc32105c6a21e5851eff0b67fc2f722ad87105602714d9dc4
144 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/123?utm_term=nexiq+usb+link+2+driver PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424341/normal_5fc202df69ce5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f929199d9fed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f934ffcaa4d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454813/normal_5fbce31a4a767.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480581/normal_5fc674d767937.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414174/normal_5fbd8cfd3ac69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5f9c38a7dbcdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459935/normal_5fd937613b2a3.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/5fc1015360f2895dc1e86a3c/t/5fc59d37f8cdb769c6a4dad7/1606786359571/12_rules_of_radicalism.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/ferujonebuxasufe.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/sogiferonek.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/rewobomimakukixusegos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fced6781c15f507d7672866/t/5fd61e60d654060362bf4902/1607868001546/basketful_of_moonlight_english_workshop_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6c69642-2567-440c-a251-347256c5777e/osprey_kestrel_48_vs_stratos_50.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc31f38e-0a5c-47fc-8b0d-3da621f979b8/que_es_el_enfoque_formativo.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_off0000c6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AB 5168 bytes
SHA-256: 4f55e731239e7b07a08126e4cf6c06948d0bd4fca7f206091804756024dab1f8
font_01_sfnt_off0000d85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85D 12232 bytes
SHA-256: 3b1c686e19fff479d5fee8fef64a165116ba82afaf2673942e3ec59bded64627

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