Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4e693b0ade6540…

MALICIOUS

PDF

42.7 KB Created: 2020-08-22 10:06:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4aa9a72c6dbb2bdf6b7473566be454e SHA-1: a0ed850758258d104160416b97a3ae91daf3e004 SHA-256: 3e4e693b0ade6540fe66dceec10ff590625f4e1f42b25888a9166c6a1922690a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to these URLs, suggesting a link farm or redirection strategy to deliver malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=w3schools+bootstrap+form In PDF document text
    • http://files.evelynpatriciaterry.com/uploads/1/3/1/3/131379395/6970682.pdfIn PDF document text
    • http://sajega.asaanalytics.com/uploads/1/3/2/7/132710714/5490968.pdfIn PDF document text
    • http://nogazizik.photographybyshannonrae.com/uploads/1/3/1/4/131437145/e23f00.pdfIn PDF document text
    • http://files.thepatternedpaperplate.com/uploads/1/3/1/3/131379949/80f867ad60113ed.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/1/0431/2003/3943/files/test_bocconi_magistrale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6296/6937/files/mivapatuxuwusibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/biriwusotisokif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/rifts_book_of_magic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/exercises_active_and_passive_voice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/bisukizasibusokeganifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5445/7254/files/54348633414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/31524748242.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 4

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_off00005de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE9 5572 bytes
SHA-256: a95344cc49688c6b84b540de0f37722d656c954565271d28354f50868c6bca71
font_01_sfnt_off000070ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BA 14812 bytes
SHA-256: 293b2b25157d9b3c29027ba561ebde61fccc9e4b35503b2629f03bc402df3f04

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