Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe53b95fdcaa8da9…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 01:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f888f4088d8e2ca4481c7ddd4900e0cb SHA-1: eeaf31477081cfce0c8caf8108df902d865d74b4 SHA-256: fe53b95fdcaa8da9504006e1b6785585d01594bf5b53a85db94a2f78d06b9e78
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=yearly+calendar+2020+google+sheets'. The document body, though heavily obfuscated, contains text fragments related to 'yearly calendar 2020 google sheets' and the authoring application, suggesting a lure. The ML classifier also flagged this PDF with high confidence.

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.com/pify?keyword=yearly+calendar+2020+google+sheets In PDF document text
    • http://files.aubricorp.org/uploads/1/3/0/7/130775393/luvurubetor.pdfIn PDF document text
    • http://files.thedpgp.com/uploads/1/3/1/1/131164081/9948541.pdfIn PDF document text
    • http://xewaxa.wonderfuljourneytravel.com/uploads/1/3/0/8/130874153/f9fc2.pdfIn PDF document text
    • http://famirij.jennifermclayton.com/uploads/1/3/0/7/130775958/0a8a7ed.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/1/0435/8995/9843/files/vivadiputujipakemigijedak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/mepakezaninuzaveselediw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/gewozig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8657/7818/files/miwojowataw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1007/0440/files/2194563108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/rogadufigatalefudutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/44159375065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/rendezvous_with_rama_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/snow_leopard_download_iso.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_off00006b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B22 5536 bytes
SHA-256: 8a051cc6eae0eaff7fa5d035d5591457343780be5f6ebd0795ef6eb934db7cf7
font_01_sfnt_off00007df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF2 10372 bytes
SHA-256: 1963441d869c7019d8908705144ad8d64a36d02f54fa2ce65b86a093045aa92d

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