Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c987c934ff11698…

MALICIOUS

PDF

41.4 KB Created: 2020-08-12 19:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94641697e98671f7bd4ac103b03a5d0a SHA-1: 19aa0177ce8e83b98375bd3aea4364de5b5eb1cb SHA-256: 0c987c934ff11698eba543745621fc3cf799153c8b8271ea24f301c2decfc8fe
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to what appears to be a link farm designed for SEO manipulation, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=cd4047+inverter+circuit+pdf', which is flagged as a malicious redirector. This suggests the PDF is used to drive traffic to malicious sites, likely for phishing or malware delivery.

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=cd4047+inverter+circuit+pdf In PDF document text
    • http://zebuxon.melbournehistoricalcrimetours.com/uploads/1/3/1/0/131070109/6823193.pdfIn PDF document text
    • http://files.silverstreamfalls.co.nz/uploads/1/3/2/6/132681303/musox.pdfIn PDF document text
    • http://files.sklgtraining.com/uploads/1/3/0/8/130814535/nuliketo.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/1/0432/7594/4091/files/ruzixas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/25658525043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/xeteranebaputal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5567/5552/files/fazibof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3703/5429/files/tools_of_effective_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2854/files/kufuxinuxuwuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/79916608616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/tuwogonobosutimamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0098/6787/files/rabezulisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/85579370887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/bhavnagar_newspaper_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/sevomosikoforavetenave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8260/4963/files/brche_addieren_subtrahieren_arbeitsblatt.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_off00006528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 5004 bytes
SHA-256: d37cbc1c9d3e63cda8ff34d9b9f7d2b8974b9290daaa03f207c45e45540d4802
font_01_sfnt_off00007656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7656 10052 bytes
SHA-256: ace89d9c53b57373c011fa895ab3627aff7bff3820bcb9e7670a471562a8aeba

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