Malicious PDF — malware analysis report

Static analysis result for SHA-256 2099853c240c6b8a…

MALICIOUS

PDF

47.4 KB Created: 2020-08-11 09:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8098655d91c88e00a3279564adf8a637 SHA-1: cf2a3925437006125a30ff764ecee17c7b651fd6 SHA-256: 2099853c240c6b8ab292482933654a75d503815a7d4df06632ad62f6f4437e98
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious content. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, reinforcing the attack pattern.

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=cessna+172+fsx+checklist+pdf In PDF document text
    • http://nofenipa.tourputtingcoach.com/uploads/1/3/1/4/131483337/93c98482078e4.pdfIn PDF document text
    • http://files.fbcwaycrossyouth.com/uploads/1/3/2/3/132302802/bupetov.pdfIn PDF document text
    • http://files.abbotstones.co.uk/uploads/1/3/0/8/130874012/d2320.pdfIn PDF document text
    • http://files.nomadwill.com/uploads/1/3/1/4/131437584/9681cc76464.pdfIn PDF document text
    • http://files.artisanclayflowers.com/uploads/1/3/1/4/131437978/33726.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4586/9985/files/56358055957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/xaduko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2103/files/47688537129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/zisaxuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/wususuvevifelapulodizosam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1762/3959/files/xufizowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/68540954385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2611/2927/files/couper_en_plusieurs_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/microsoft_sql_command.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/jadizomoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/3251041492.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE2 5244 bytes
SHA-256: 382bfb84b9e740e108abab60208f8c0ece8b466e5dedb463292c7f387aab2962
font_01_sfnt_off00007fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC4 10244 bytes
SHA-256: e8f40f7bcecb15818aa7d688cf9dc6dc464667d4dd92297c930606d77924fa93
font_02_sfnt_off0000a2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BA 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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