Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3f0aecdccf95496…

MALICIOUS

PDF

32.7 KB Created: 2020-08-24 13:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfda55bf3deb22a1837c4fd90928b55f SHA-1: 3512f166d55c67c038844c1259dbbc38ae19f0d8 SHA-256: a3f0aecdccf954962aefb71af789a0f76448b341714ed59d99515ebc2456a865
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a Breitling watch manual and multiple URLs, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to drive traffic to malicious destinations.

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=breitling+1884+chronometre+navitimer+manual In PDF document text
    • http://metopiwi.archaeoacousticsscotland.org/uploads/1/3/1/3/131398564/vegeluku.pdfIn PDF document text
    • http://files.annepatrickbooks.com/uploads/1/3/1/3/131398157/fa86a81a215857.pdfIn PDF document text
    • http://nuxujaloz.gracefulvoice.com/uploads/1/3/1/0/131069839/2481569.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/1/0429/7873/8335/files/sebafoxususonazula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/42166659642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/26954508997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0479/2729/files/english_grammar_rules_and_usage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5765/1613/files/jajidunogigeresida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/xetuxibugoziwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/free_avast_uninstall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7249/5519/files/vibufena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3077/1869/files/absolute_app_inventor_2.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 1

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_off00004370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4370 5476 bytes
SHA-256: f25257dbf5433ea4fcf591bfe8621c7350e4bd7bbe193d37c49d961b91a69425
font_01_sfnt_off000055f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55F9 9436 bytes
SHA-256: 976809013f47d71978b6ee4c97adbbb56a068c638a19fc3bfd26144197572a89

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