Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6b06d7cc6d1820…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 01:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a5f217a232ebf60566cad8dc9e2aea3 SHA-1: 334d5ed3f8ba97eb0d1e4b932bd681f698da7fd3 SHA-256: 1c6b06d7cc6d182034deb560db4022c8cf03f9ea459065427db7ea65f38f35f9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is designed to obscure the final destination. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to drive traffic to this redirector. No scripts were extracted, limiting further analysis of payload 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.cc/pify?keyword=glueless+sheet+vinyl+flooring+adhesive In PDF document text
    • http://files.goldenpointpartners.com/uploads/1/3/1/3/131380279/subovi.pdfIn PDF document text
    • http://fumadife.jackiemontes.com/uploads/1/3/0/8/130814328/a4b8b.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/1/0431/8255/5297/files/brocade_network_advisor_14._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2090/9733/files/80721704705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/auto_tune_8._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0262/9016/files/vector_calculus_6th_edition_marsden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/balancing_chemical_word_equations_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/31706182775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/87834711918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8065/files/calculus_of_variations_elsgolc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.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 1

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_off0000646d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646D 5364 bytes
SHA-256: 7d2e6d80e9fec25be3585ba1198492d6affea0c1fd4ff5ae3ba60396c30b856d
font_01_sfnt_off000076b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 10288 bytes
SHA-256: 60a7a53da0f815f2f5b876cbc150517e2eda1fd0a9ae900de6b97064f5a4528d

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