Malicious PDF — malware analysis report

Static analysis result for SHA-256 15a382c5881e1964…

MALICIOUS

PDF

39.5 KB Created: 2020-08-19 11:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5062061f1d01a8243e6ae62a947cfb6 SHA-1: 8aebdbe24eddaea9486a5083aae0755bae7311a2 SHA-256: 15a382c5881e1964245598884d9244fde67de62a3b5c1b5124a018afbdd36bad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The primary redirector URL, 'https://ttraff.cc/pify?keyword=british+journal+of+sociology+of+education+pdf', is flagged as malicious. This suggests the document is part of a link farm or SEO poisoning campaign designed to lure users to malicious sites under the guise of providing academic papers.

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=british+journal+of+sociology+of+education+pdf In PDF document text
    • http://files.thierryrmontoya.com/uploads/1/3/1/4/131438460/4767722.pdfIn PDF document text
    • http://files.sandblast-arts.org/uploads/1/3/1/4/131483603/wigigavogudokod_pobaf.pdfIn PDF document text
    • http://fagosi.mistrasgrouplearncenter.com/uploads/1/3/1/4/131453540/5635920.pdfIn PDF document text
    • http://files.aurorabreath.com/uploads/1/3/0/7/130740173/f0b2983d86.pdfIn PDF document text
    • http://files.hamtaladesigns.com/uploads/1/3/1/3/131380042/fiwofebevut.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/1/0435/4444/5082/files/likekufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/iron_deficiency_anemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6823/files/cookie_clicker_auto_golden_cookie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/suzofukoretaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2524/4053/files/new_blob_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/email_writing_examples_informal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9029/7503/files/leluwofaxawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/arrastrado_por_el_mar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/7619072089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6929/9098/files/80167022247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1219/3438/files/98113465286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3531/1784/files/oxford_discover_2_grammar_book.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 6

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_off000059b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B7 5644 bytes
SHA-256: d7365cf707bf6a45a166bc64a776b66098b9fa86972dc1b6654c9b1b32ca2280
font_01_sfnt_off00006ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CED 10536 bytes
SHA-256: 4cb27eec8c1b61a7240377929cc542acdccf855f67b4894d5af81e15987b5ece

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