Malicious PDF — malware analysis report

Static analysis result for SHA-256 7caf9533aea2c5c4…

MALICIOUS

PDF

53.1 KB Created: 2020-08-23 08:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9449b78c5a2c7316d59fa9ff1a0c6bc SHA-1: 05af52d28ba30e7cf37333e7f354b1d4c46b3b89 SHA-256: 7caf9533aea2c5c49f027cc88cbcddbced6bb092b8fb1f5a13c17d1e21630a72
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt disguised as a free download. The embedded URL `https://ttraff.cc/pify?keyword=amfetamin+ba%25C4%259F%25C4%25B1ml%25C4%25B1l%25C4%25B1%25C4%259F%25C4%25B1+pdf` is a critical finding, suggesting the document's primary purpose is to redirect users to malicious content. The ML classifier also 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=amfetamin+ba%25C4%259F%25C4%25B1ml%25C4%25B1l%25C4%25B1%25C4%259F%25C4%25B1+pdf In PDF document text
    • http://sukasos.foundationjustice.org/uploads/1/3/1/3/131379759/d57a31.pdfIn PDF document text
    • http://files.c3edu.org/uploads/1/3/2/6/132681725/0d441893551989.pdfIn PDF document text
    • http://files.blue-owl.co.uk/uploads/1/3/2/8/132816087/zefaxuzowit.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/1/0432/2200/7969/files/bifekufuvuwifumave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/grand_theft_auto_5_ps4_pre_owned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/motor_vehicle_representative_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/17649479026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/7364210851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/star_wars_the_rise_of_skywalker_metacritic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/kojijaluni.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 3

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_off00006f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F73 5304 bytes
SHA-256: 4efe7c4b861a7785942d052d2779312309280fd44d67e69b9f599349dfacea2e
font_01_sfnt_off0000816b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816B 15936 bytes
SHA-256: 2b51e28059baff494be2b6c0e1b0f80a951d1ac937c6e3f6020ca1c31bad0739
font_02_sfnt_off0000b04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB04C 16236 bytes
SHA-256: 5935238e8e10e91f69a72039459809ee5afa495131852ebfd0764fde2575a951

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