Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d899c1b98679709…

MALICIOUS

PDF

42.7 KB Created: 2020-08-01 21:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1af0248dfff05c9e4f8095648ac422ea SHA-1: 80339c157b4799958976e378820661dd97867d11 SHA-256: 7d899c1b9867970966c751798a814b4b5205ab2335e0b35bc9b2a2307229e971
194 Risk Score

Malware Insights

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

This PDF document contains a link farm and a redirector to a malicious URL, disguised with a search query for 'dijkstra algorithm python 3'. The ML classifier strongly indicates maliciousness. The document's primary function appears to be to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=dijkstra+algorithm+python+3 In PDF document text
    • http://files.my-spiritual-garden.net/uploads/1/3/1/3/131379111/bezobose-nigamebul-mevefawaw-najolilu.pdfIn PDF document text
    • http://files.thesweetfarm.com/uploads/1/3/1/3/131382590/8099358.pdfIn PDF document text
    • http://files.kcorneliusimagesandmarketing.com/uploads/1/3/2/6/132681201/0f9e1c4b844779.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/1/0430/6809/6661/files/jojowiwabif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/farotobirifurikimoxudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3733/3406/files/koxunovalidamotirikurazof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/lezuzoxevekepabez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/xagasetewagewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/35107069794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/84995996615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/fuvofowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/21348488376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/32692110184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/dizodomaxepaduvum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/strike_the_blood_ex.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_off0000620c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620C 5640 bytes
SHA-256: e3ac695d7ffb291753d371807b04a6b9af753a659ed59cfe870b92d24a5c4ec3
font_01_sfnt_off0000752a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752A 12692 bytes
SHA-256: 5203a3156102f5f4aea31da1a9a6a25590a24b7e64a2ce62de6d5ad0bbcacf9e

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