Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6a85e32af0b5c8…

MALICIOUS

PDF

42.2 KB Created: 2020-08-11 07:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5143242f1fa3f56ae6111783e6d60c9 SHA-1: fd18c62ed3956ea0dff41efde536a5170b7823f8 SHA-256: 2c6a85e32af0b5c87135bba73e547d3bf8d2f844f82e9268b93aa8ac4aa42f0c
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body also contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=pdf+file+format+documentation, which likely leads to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pdf+file+format+documentation In PDF document text
    • http://files.damianduguid.com/uploads/1/3/1/1/131163666/zirokekuro_tarekajozu.pdfIn PDF document text
    • http://files.curriculumconnection4sped.com/uploads/1/3/0/9/130969997/3ef443.pdfIn PDF document text
    • http://files.bikemanbikerentals.com/uploads/1/3/1/8/131856797/murukerivix-lotesefasuwab.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/1/0429/6084/7004/files/actual_test_listening.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2547/7277/files/guia_ceneval_exani_ii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5932/2778/files/authoring_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0976/files/sabojofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/telokawukikotenubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3119/1975/files/71522003067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/analyse_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/lebet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/automated_form_filling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0742/4158/files/vosopemipakulusaxedofi.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 2

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_off0000690a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690A 4988 bytes
SHA-256: 6a4a67090f788b413273743af6ac226ef8b3fc93fcc86f75ce4d8d3106e85c7d
font_01_sfnt_off000079e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E1 10008 bytes
SHA-256: 489ee2fe0146d551a5b3e9c673d7e55ca5af60a58a501f665f75b0a9258280b2

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