Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cd2c74e8ebd99d…

MALICIOUS

PDF

63.8 KB Created: 2020-08-07 20:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c061b1b10c2d83c1dab031d188799ba1 SHA-1: 4d5dc2806999bbe18a3704082c61016a10a9ef95 SHA-256: 80cd2c74e8ebd99d9bb12337b240b895f6313ed25b171b0a67b33f3fe1de6bc5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. This suggests a link farm or phishing attempt designed to lead users to harmful content. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs indicates an attempt to direct users to external sites.

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=tube+digestif+histologie+pdf In PDF document text
    • http://files.granbygolf.com/uploads/1/3/1/8/131871614/wefozelonefep.pdfIn PDF document text
    • http://files.flyfishingcoyhaique.com/uploads/1/3/1/4/131409009/jozunavuvel_gizadedunez_gutajosemele.pdfIn PDF document text
    • http://files.achildsworldtherapy.com/uploads/1/3/1/6/131637308/bekemupezotisel.pdfIn PDF document text
    • http://files.mindandhomeinsurance.com/uploads/1/3/1/6/131606046/dugutajuro_renirizogulod.pdfIn PDF document text
    • http://rituwevaw.holisticlivingjourney.com/uploads/1/3/2/6/132681670/kiramumubobomaxov.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/1/0432/7102/8896/files/17315651032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/third_angle_orthographic_projection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/widizosatadusuzovasovodas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/28042813443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/35073101432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/tamobutemore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/kupubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/elite_dangerous_how_to_change_hud_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4884/3929/files/nozowizijobodimoxuwibuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0219/9196/files/movie_themes_easy_piano.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA181 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off0000b268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB268 5088 bytes
SHA-256: 3cf9e91df9709b17ee770e5138683e11402d70f19a5889a925fc3ca453b08573
font_02_sfnt_off0000c3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B9 15000 bytes
SHA-256: 37a996e3474e10181b3e4404cd1410945504ebaa87299787ebac3c9af7f0fa7c