Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fecf959fbd218d0…

MALICIOUS

PDF

47.9 KB Created: 2020-08-22 18:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9dfeeef158fd85ad17bd27b95491c76 SHA-1: c06e39ae131ccafdabe7e3a5637fcaf30d57e69f SHA-256: 5fecf959fbd218d0173b9801c6c8f0e1cfae6e15c5954d94ba75dd0118aa3627
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, many of which point to a redirector infrastructure. The primary malicious link, https://ttraff.cc/pify?keyword=biosynthesis+of+carbohydrates+pdf, is identified as a malicious redirector. The document body also contains a similar URL, suggesting a phishing or scam attempt to trick users into downloading potentially malicious files disguised as academic or cheat sheet documents.

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=biosynthesis+of+carbohydrates+pdf In PDF document text
    • http://files.mermaidsutra.net/uploads/1/3/0/7/130739713/kulixo.pdfIn PDF document text
    • http://tikikapa.bedsgympie.com/uploads/1/3/1/6/131637352/2117729.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/1/0431/8602/8708/files/terminal_command_line_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65817182127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2343/2861/files/canon_in_d_piano_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/tufosapivejorewuzugefoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4011/0754/files/ninja_gaiden_sigma_walkthroug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/dotinavunenakoregitusola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2634/1278/files/5896628643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/organosulfur_compounds.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_off00007cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC8 5504 bytes
SHA-256: 41c6eb05962502ce9e5fcdf113d2493efc3bddc1e052a373aeee8edb9b307e9d
font_01_sfnt_off00008f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F74 10404 bytes
SHA-256: 17c6d688bd33710ea5c9aebbaa8d4c7fb8d96a0e70871676e2c56a59569d29bf

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