Malicious PDF — malware analysis report

Static analysis result for SHA-256 3edcc1a4e51c643e…

MALICIOUS

PDF

47.1 KB Created: 2020-07-30 06:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77b08c9d526af0f460b4ccc9a46cba67 SHA-1: 6cdec26f7f18d4c58706001142c56fa4a50b4362 SHA-256: 3edcc1a4e51c643e8ddd2b06878589e67bf202026f90e31b48b1917d1a6ec035
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=accounting+equation+problems+pdf`. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The document body, though heavily corrupted, contains keywords related to accounting problems, likely serving as a lure.

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=accounting+equation+problems+pdf In PDF document text
    • http://files.selindoalpha.com/uploads/1/3/1/3/131379567/nubewarer-lubutatalolape.pdfIn PDF document text
    • http://files.joysalyers.com/uploads/1/3/1/4/131483029/2101968.pdfIn PDF document text
    • http://files.yogamuseinc.com/uploads/1/3/1/4/131438203/7aabeadaabc5.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/1/0432/6513/0660/files/10363099630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2437/5194/files/xabuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/dalamobobaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jamitaribigonekadori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7403/4600/files/kofoninufewogad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/lonezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/xatesirevubusutaxulomam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/jalujuxurisexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/69063952189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5521/7814/files/46386598128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6925/1492/files/34351301900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3290/2806/files/fevatuputigagagagepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/869563537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3160/8989/files/86088747554.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_off0000788a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788A 5612 bytes
SHA-256: e6e50cfb173ed07fca4d1b951bf9765ebde2c78021b911263beb299415cc5d89
font_01_sfnt_off00008b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6C 10568 bytes
SHA-256: dff29bccfadc6379fb34f563f85f796cfe3890f217d6385897400a48d72a9a9b

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