Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e773c849c8fd722…

MALICIOUS

PDF

40.7 KB Created: 2020-08-17 17:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df8036942fad91fc265ff29fe497494d SHA-1: bccd24e3cb6c75379bc8010bf733c4d7f1cb5de0 SHA-256: 0e773c849c8fd722f3dead0cc34b4771a6f8d6a88ade043b49288261c6655ede
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains URLs that are part of a link farm designed to appear as legitimate documents, likely for SEO poisoning to lure victims. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=food+quantifiers+worksheet+pdf In PDF document text
    • http://files.george.work/uploads/1/3/1/8/131871621/5840953.pdfIn PDF document text
    • http://weraga.dojgameshq.com/uploads/1/3/1/8/131856602/soziwozo_kumavuwolavekib.pdfIn PDF document text
    • http://files.bpoelks411.org/uploads/1/3/1/6/131636772/5992647.pdfIn PDF document text
    • http://files.ascientistengineer.me/uploads/1/3/1/8/131871650/kuwativet.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/1/0430/1121/1417/files/lomami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/island_biogeography_ecology_evolution_and_conservation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1935/4791/files/analisi_logica_esercizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9744/7836/files/developing_problem_solving_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/61098538362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/tivoxowoduwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/7954863850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6058/4870/files/30071701859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2240/1192/files/padefolipavifalakifilokas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9177/8965/files/8349675466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9991/files/somukelubufuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/zajidufesuxilesum.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 6

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_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 5336 bytes
SHA-256: 58c23a16f160dc12514a64d3d4ed41a8785408865bf5ef6c807003c52809f0bd
font_01_sfnt_off00007394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7394 10132 bytes
SHA-256: 67010dbde75815308ebb40e2e1a0a52c7e3daf25623dfb0fa994d36829647c05

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