Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db41e6a76c679d5…

MALICIOUS

PDF

49.3 KB Created: 2020-08-24 22:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c37804b5e8df5cff594f66697b7e5058 SHA-1: b848b3563e1bed8bd137de71772fc9828fab5b4b SHA-256: 6db41e6a76c679d5858dcf98c7289f026463dcbc520d84012da1c03fe94c2594
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body and heuristics indicate a link farm strategy, likely to phish users under the guise of free downloads. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=fibrocartilage+callus+formation+meaning In PDF document text
    • http://files.nunavutlearning.com/uploads/1/3/1/4/131453156/5a4a63f876.pdfIn PDF document text
    • http://lixefeb.teresasthriftytreasures.com/uploads/1/3/1/4/131405927/1105c50baab62.pdfIn PDF document text
    • http://bokivibur.candiceblount.com/uploads/1/3/1/3/131382406/raviwozilidonup.pdfIn PDF document text
    • http://sagusa.petebarryspiritualmedium.co.uk/uploads/1/3/1/4/131408899/vonivide.pdfIn PDF document text
    • http://sininox.keahisoccerclub.org/uploads/1/3/0/9/130969959/zezasezefenoz.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/1/0435/8642/0893/files/vevasifudezunez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2429/files/85510120955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/curse_of_strahd_player_s_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/86070358410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4653/5073/files/chander_pahar_film_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/49592640104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3603/0614/files/23096942802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/lijopujiwofaruranubufax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/sejezotizeliruxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.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_off000083f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F3 5296 bytes
SHA-256: d8ea526ed747e85a8973ae9588f4dbbaec502f6d4302eff73eb4e1d0266d3c5a
font_01_sfnt_off000095db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DB 10156 bytes
SHA-256: bd8dbeced54954c65c5434376ab4e6b0d5f7ec7a8f1c267e03ee50cc2d7ef982

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