Malicious PDF — malware analysis report

Static analysis result for SHA-256 742c3960df81c9fe…

MALICIOUS

PDF

47.6 KB Created: 2020-08-12 01:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cf2ebd74395e234bd2e4cd3af068424 SHA-1: e5bd5b18dd790e5fb45e79c3d5d74d5a6d66c081 SHA-256: 742c3960df81c9fe434a9abdc5ee25a0a639b7b41634501fed6a51f47ead0b14
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though obfuscated, includes text related to 'Mns blood group system pdf' and the tool used to generate the PDF, suggesting a lure to disguise the malicious intent. The presence of many external PDF links indicates a link farm or SEO manipulation tactic to distribute malicious content.

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=mns+blood+group+system+pdf In PDF document text
    • http://bavudi.bestmusicteacherever.com/uploads/1/3/1/8/131871883/litegofitebupe-pazad-zivifaxogewi-nolurugurevusal.pdfIn PDF document text
    • http://files.sedistrictpaha.com/uploads/1/3/1/4/131438538/9cb16.pdfIn PDF document text
    • http://files.onlineloan-payday.org/uploads/1/3/2/6/132681824/409819.pdfIn PDF document text
    • http://sojiw.chloemannphotography.co.uk/uploads/1/3/0/8/130815009/1b9f9f7.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/1/0435/7714/7547/files/bikalufigepakisab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5589/6983/files/91428856532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1652/6752/files/62302566704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/85154295475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/60892530267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/project_on_working_capital_management_in_banks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8436/9311/files/raquitismo_hipofosfatmico_familiar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3997/1736/files/16655443343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/72295065407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6653/0728/files/pavepipulepanas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/9756628785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/8744991134.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 4

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_off00007b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B69 5400 bytes
SHA-256: b1c13e548bb3e8851af0834ce53cdc1c6d516135d8fb90314d9d900e87af4caf
font_01_sfnt_off00008dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBD 10660 bytes
SHA-256: 5394179dfeb88e944bb1b0a98893b69874b5eb74c2a2e65670a328f497d85fb7

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