Malicious PDF — malware analysis report

Static analysis result for SHA-256 de576d04c36ff383…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 02:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c420a7085776d5662b1dee2e31560ece SHA-1: bf755924712f2ee313e6221cc329fe5deaf99042 SHA-256: de576d04c36ff383be8956eab59e93dae7a9703da250a87f50ec6776ff5e52c9
202 Risk Score

Malware Insights

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

This PDF file contains numerous links, many of which point to a redirector infrastructure designed to host SEO link farms. The primary redirector URL is https://ttraff.ru/wb?keyword=vogels%20thin%20505%20manual, which is flagged as malicious. The document body also contains embedded URLs, including benign Shopify links and other unknown domains, suggesting a phishing or malicious redirection attempt. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=vogels%20thin%20505%20manual In PDF document text
    • http://nelofil.thegroundsatconcord.com/uploads/1/3/2/3/132303382/feponixukakikol.pdfIn PDF document text
    • http://zuwox.dunegrasscreations.com/uploads/1/3/1/3/131383483/todibuzimanod.pdfIn PDF document text
    • http://luxudima.herbesque.com/uploads/1/3/1/0/131070792/geruraponake.pdfIn PDF document text
    • http://files.absolutespeedmag.com/uploads/1/3/2/6/132683135/puzuxorixasofop_salagomir_zitaw_rivajon.pdfIn PDF document text
    • http://lunen.rissmusicschool.com/uploads/1/3/0/9/130969204/pelupodiwo.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/1/0429/9243/5359/files/zoregogubebolegawimon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2922/8702/files/54029509182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/agile_it_organization_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8093/1742/files/fesogufuwana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/pepevetefusot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1722/3847/files/13985717019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/buzizawirosurikesif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/tisaniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1031/0822/files/fadurikakizole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/62062453471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/jomotegukonaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/free_books_download_for_computer_science_engineering.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 5236 bytes
SHA-256: fc0b069ad9deffb0d9f1e904bd0fff46ca80872285e4d0c3e3db9cfcd766e3be
font_01_sfnt_off000071d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D6 10244 bytes
SHA-256: 5784f4eea28ea519f230f19c58f472e1452afd6c6b17b2e3c7b118272301a040