Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfe29ba5da18652…

MALICIOUS

PDF

46.9 KB Created: 2020-08-21 12:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b12be5ecbbb9240bd1bc8dd55a34ece SHA-1: f9240e3a372a9a866ae3fee8e1827dddc46f76f0 SHA-256: 2cfe29ba5da18652afcd0d653f249335fc68c882d1da01629cee827ec256ab23
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for 'Fm whatsapp 6. 90 apk uptodown'. This link directs to a known malicious redirector, ttraff.cc, which likely leads to further malicious content or downloads. The document also features a large number of embedded links, many pointing to Shopify domains, suggesting an attempt to create a link farm for SEO manipulation or to obscure the primary malicious destination. The ML classifier strongly flagged this PDF as malicious.

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=fm+whatsapp+6.+90+apk++uptodown In PDF document text
    • http://fumude.usaphysicaltherapygilbert.com/uploads/1/3/1/6/131607163/sowesidafog.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/1/0437/8034/1917/files/97384423516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6480/2982/files/zujanubanepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/past_simple_versus_present_perfect_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/jinogibokuxisaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3077/files/protein_electrophoresis_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0757/4179/files/vakesututa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/vujivekudedelarerabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/nexos_temporales_y_causales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8505/2566/files/86950307431.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00006345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6345 5668 bytes
SHA-256: f89badbac7743989b1021ef89bcd5dbaf0609c171ad2d4107b07eec9b115c151
font_01_sfnt_off00007679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7679 10240 bytes
SHA-256: 3d364441ec2ce5e71dd54a2052813b6c7059c949ff68ad2a1fffe0604cbd52f0
font_02_sfnt_off000099ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AE 16304 bytes
SHA-256: 2ec471bc1dd097ba7445d0d98fae4076614f7d308a936bf5c28a382db3fe60d2

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