Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c8c2b9dee498560…

MALICIOUS

PDF

43.5 KB Created: 2020-08-06 11:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1302548432888155c4f099954f5f3fe SHA-1: ee446cd0e4b3d8599f9da6da8d367e6b1d716453 SHA-256: 0c8c2b9dee498560ce22e53804195f2b0c72eee09589a4a25959b231f9e87005
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate journal downloads, but it redirects to a malicious URL (ttraff.com). This technique is often used for phishing or to distribute further malware. The ML classifier strongly indicates maliciousness, and the PDF structure itself points to a redirector link farm.

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=occupational+safety+and+health+journal+pdf In PDF document text
    • http://jisegiza.oletownaussies.com/uploads/1/3/1/8/131871871/9935244.pdfIn PDF document text
    • http://files.mountainairdance.org/uploads/1/3/1/4/131437532/1947269.pdfIn PDF document text
    • http://files.greenearthtravel.com/uploads/1/3/1/4/131438071/wutopalowes-mofosipifikafil-munuvepepiri-pemubadula.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/1/0431/7764/0092/files/gowupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/kivalid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/barag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9452/files/73923364222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/dolivujesizozulowemerojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0132/3421/files/45801145010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/10858255690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/support_vector_machine_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/70363450449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4383/1464/files/12346555078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5860/9819/files/towipazifevetafel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5655/4394/files/42154586852.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 5

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_off00006c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C26 5448 bytes
SHA-256: 0cfb8fbd8f6ede101684b5c4b7d37cb899f9a5cf5e4b9bc07bcc3b1a68e1bca3
font_01_sfnt_off00007eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAF 10108 bytes
SHA-256: ebe60e9e8049bad0791456f3e75979a00ac9c3833210ce5b15c66cef33cd1075

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