Malicious PDF — malware analysis report

Static analysis result for SHA-256 374e251ec235fd98…

MALICIOUS

PDF

48.2 KB Created: 2020-08-10 09:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 556ff9b56e40e26a60e395c1efc1bfc8 SHA-1: 6fdc27ed96b29fa5af0ef5e50f9910b105a9ad14 SHA-256: 374e251ec235fd98fc67ad772aa55260107a4961a87d7c66cec35c5392162f54
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=autonomous+underwater+vehicle+project+pdf', suggesting a lure to download further content. The presence of a large number of external PDF links also indicates a link farm strategy.

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=autonomous+underwater+vehicle+project+pdf In PDF document text
    • http://files.lionessenergetics.com/uploads/1/3/2/7/132740270/zususojax.pdfIn PDF document text
    • http://files.swancreekhempco.com/uploads/1/3/2/7/132740633/525ff48cf6.pdfIn PDF document text
    • http://sutuxatap.bickleyandcompany.com/uploads/1/3/0/7/130775607/vasalivinuv.pdfIn PDF document text
    • http://gazevupe.maximsdogue.com/uploads/1/3/1/6/131636725/e9fe4bca.pdfIn PDF document text
    • http://files.harvestministriesfl.org/uploads/1/3/2/8/132814276/xufujuliseraj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/gefil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/xuritujetumorowij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/72915202643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/76443525808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/vowekobufonovevugufugavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/81747639829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2904/4119/files/arthritis_uk_shoulder_pain_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bopeberovejaxurid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/zaxibemororutivuraxeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/dakexubudepizamofotoze.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 7

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_off000070b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B6 5496 bytes
SHA-256: 1d85c5dad63cc71ff541251d43fd01022e9bdb45465d23eb4d66f9e4474fe58b
font_01_sfnt_off00008348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8348 9880 bytes
SHA-256: 60a95fcbb76c0f5cfaaed768fce956fb811ab7395d355e8c9c1087115c8d90e4
font_02_sfnt_off0000a516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA516 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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