Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb60d2bdbb31e3b3…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 19:27:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2119813c5d11e819748c44b18e05de41 SHA-1: f2881dc560ac79a09d8bed9984c90e6a3e760599 SHA-256: cb60d2bdbb31e3b3770dc39ca11a845762a5dd417b99861851419b81639aa3bf
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used to create link farms for SEO manipulation or to direct users to malicious sites. One of these links, 'https://ttraff.cc/pify?keyword=gym+cleaning+checklist+templates', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack pattern appears to be social engineering via a link farm.

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=gym+cleaning+checklist+templates In PDF document text
    • http://naruxuf.skellysongs.com/uploads/1/3/1/1/131163927/nafupe-paduparu-kaxepedenu.pdfIn PDF document text
    • http://vinoluve.rachelhoblitt.com/uploads/1/3/1/6/131637308/4824144.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/the_complete_guide_to_asperger_s_syndrome_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/peter_pan_disney_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7373/9675/files/beclomethasone_formoterol_in_the_management_of_copd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/coordinate_geometry_class_11_ncert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5513/5390/files/nafefamusorudagerokizuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/75515777040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/capitec_learnership_2020_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/77098005261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/guxaxu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB9 5124 bytes
SHA-256: 2690946db826995f2ba2de321ecbaa7dfe3a83644d00340cf3721244f5d0a8c4
font_01_sfnt_off00007004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7004 9892 bytes
SHA-256: d15c11c97b5f6423e34555c2052c75b95b54496e89dc5e2fc5c254c54271bbec
font_02_sfnt_off000091d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.