Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da254a212b2a84b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-18 20:43:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 410b83f044766522ce73f198ca16a943 SHA-1: a7a0967346442137762f156ebeaa26668c87139b SHA-256: 6da254a212b2a84baa1801db33ae963fc130db74169510deca3f498322fcf8ad
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at "https://ttraff.ru/pify?keyword=atypical+pneumonia+pdf". The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting users to malicious infrastructure.

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.ru/pify?keyword=atypical+pneumonia+pdf In PDF document text
    • http://wagapew.catmintcottagestreetcatrescue.com.au/uploads/1/3/2/3/132303382/4431803.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/1/0437/1195/5098/files/likorerojakakoximige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/animator_vs_animation_game_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/rubetuxunutusowuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/instagram_old_version_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/17243041659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/rs3_woodcutting_guide_f2p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/linorupeduwag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/4062723401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/beekeeping_for_dummies_download.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 3

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_off00006491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6491 5120 bytes
SHA-256: eb2007ec48f75a78aa0a6524348947afb210a1fce60ee5baf819b06b3108b850
font_01_sfnt_off000075f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 10540 bytes
SHA-256: 5b9e56b0e51454ae5fc9afc7b2581a87c4bcd4382cdd52d6e394a380e1d3a5da

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