Malicious PDF — malware analysis report

Static analysis result for SHA-256 0042462893e7ea2d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-10 03:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b85fb718e606fd8126b27540a89dbb64 SHA-1: 724d9f87227b2c4ad659e7f4fef7f757fe34efdf SHA-256: 0042462893e7ea2d1a77035f1707d02408294595caf0510b9149aca97644cdc5
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Erling Kagge silence pdf' and includes the malicious redirector URL. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ttraff.ru/pify?keyword=erling+kagge+silence+pdf In PDF document text
    • http://navomuner.newmorningacu.com/uploads/1/3/1/6/131606289/60af981a7d2b133.pdfIn PDF document text
    • http://golek.cashforgoldwc.com/uploads/1/3/0/8/130874524/peletanimu.pdfIn PDF document text
    • http://files.globalsteameducation.org/uploads/1/3/2/6/132695301/9405102.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/aparato_digestivo_fisiologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4789/2630/files/86029885010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/rogukasokoxerilivuwejuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5696/1438/files/watugivuxokovesogotutipir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2982/1602/files/5630481260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9251/2678/files/quantitative_data_analysis_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/fajoduwajegalugesuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/digiplex_surprise_showtimes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/fujulexakuliropezag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/setolewozaxabavuguminizew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94260126358.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEB 6476 bytes
SHA-256: c647ff4b3efa7eb0abfdb1e34c0aeed5ef2924f4824dcc98b667669ba207a2cf
font_01_sfnt_off000070e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E1 5344 bytes
SHA-256: 9151244e9c867f64c21208f935a1bcbe7711e019a28d35caa51ba9341c63a110
font_02_sfnt_off00008327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8327 10428 bytes
SHA-256: e4491ed99dbee7b4e9bc5aff38d3b773d2e2fb5bf79076b07e7128ab3d49a95a

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