Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9e6d1025779a84…

MALICIOUS

PDF

42.4 KB Created: 2020-08-09 17:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75a494e9f1c384945a0a1e42c4c2fe6c SHA-1: 6c1ba037bb55cdc74a8fcf61744cad8f2c7f9a85 SHA-256: 5e9e6d1025779a84aa714f8fa34a3ea872ac15358ce3bbfe4fba83f436f03709
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to external PDF files hosted on various domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic indicates a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=pathogenesis+of+neonatal+sepsis+pdf', which is likely used to obscure the final destination or deliver a malicious payload. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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=pathogenesis+of+neonatal+sepsis+pdf In PDF document text
    • http://sewakes.g-baldai.lt/uploads/1/3/1/3/131383664/83818.pdfIn PDF document text
    • http://files.thefranchiseleague.com/uploads/1/3/1/4/131438175/turafu.pdfIn PDF document text
    • http://files.catalystmsm.com/uploads/1/3/2/6/132683334/8340257.pdfIn PDF document text
    • http://files.goldenbirdhope.com/uploads/1/3/2/6/132695418/rovig.pdfIn PDF document text
    • http://xapis.capricecrawford.com/uploads/1/3/0/8/130873851/1801597.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/1/0436/2970/7422/files/tanunixidukakugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/48528521493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/54131875440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/jonenibuposikide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0498/files/324036877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/chinua_achebe_the_african_trilogy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4853/2128/files/all_the_mods_3_power_generation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/rakaxogexewonuvuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/bteb_job_circular_2020.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 3

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_off000068e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E8 5208 bytes
SHA-256: bd206990b89810d0fe6e744ca57fa2dc3454dddaa0c0652cc61b545bc9c5f4dd
font_01_sfnt_off00007aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAB 10024 bytes
SHA-256: 529a29bfe735edc34d84f5211e7c323ac2e375208d632e6614dc31281bb827a7

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