Malicious PDF — malware analysis report

Static analysis result for SHA-256 7695fb3af1a6bb86…

MALICIOUS

PDF

77.4 KB Created: 2020-12-25 18:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a91041d724b728fb67f2f8e0cd0d6d46 SHA-1: 76e885ba7c5317fda2d5669602d8cbfc65425299 SHA-256: 7695fb3af1a6bb86379e0180f5efc2962153b9250f566ae809099242a5d8a065
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF document employs a social engineering tactic, presenting a 'free-download phishing' lure to entice users into clicking a link. The linked URL, 'https://traffset.ru/strik?utm_term=lloyds+online+download', is identified as a redirector, likely leading to a malicious payload or phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://traffset.ru/strik?utm_term=lloyds+online+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457854/normal_5fd5fa47aaaa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448986/normal_5fc82c821f825.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8a51e4e614f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450517/normal_5fc1ad735f692.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/56f985eb-b0cf-4bd8-a752-1c548ce6ddea/h_driver_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0ab4f22-e8db-41f4-8b48-ae680008be68/79774638560.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/simon_baker_breath.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/92732312379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70996362-833d-42bd-95e9-bc200cc91eab/waynesboro_va_real_estate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeadad09-7d07-4f6e-9059-7bd2df7bb144/84509356493.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/rujixiruzipebon.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A5 4860 bytes
SHA-256: 887aff506d72797047b4c32acc5e74185dba79298d4dc6370b3a760548b976d7
font_01_sfnt_off0001055a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055A 10528 bytes
SHA-256: 3fc4715d07cdc17c2870d2fd531f5ba9c44fba639210e37a644a4185ebc6eab9

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