Malicious PDF — malware analysis report

Static analysis result for SHA-256 4661758e1ae4c27e…

MALICIOUS

PDF

42.1 KB Created: 2020-07-31 10:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 802fe7df5fbd740cda0aea35f6f400ce SHA-1: a1ccc121807274a5deac543458e759e4cbb250dd SHA-256: 4661758e1ae4c27ed3bd3513125b167d3874fbe4fa6987482635bbf21a5c0880
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This indicates the document is designed to redirect users to potentially harmful websites. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO manipulation or link distribution scheme. The embedded URL is likely intended to be clicked by the user, leading them to the malicious redirector.

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=electronic+devices+and+circuit+theory+by+j.+b+gupta+pdf In PDF document text
    • http://files.jpactm.org/uploads/1/3/0/7/130739558/956628.pdfIn PDF document text
    • http://files.manalily.com/uploads/1/3/1/4/131409244/jinezobozemiz.pdfIn PDF document text
    • http://files.oaklandriversidegolfcourse.com/uploads/1/3/2/6/132680901/lonisejaviwaleloba.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/1/0431/0233/9232/files/jewitapadabojabugifaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/71967422385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31906594002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/ramiput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/52442968832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/43413473786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/51159265838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/podokif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/99842606233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/37687633275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/vurujavuneju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1536/5020/files/fepenuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5637/files/pugapuf.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_off000064fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FE 5668 bytes
SHA-256: c33495440d56373dc6936ca89ea49ef2f2e129c51c6f1455b95e4a543b543ffc
font_01_sfnt_off0000784c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784C 10120 bytes
SHA-256: 4bff22ec6f29a7e6c7d2f2e2f54fae9299480f0bcefe494f8e8257077f4b015f

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