Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e3d9ee06438375…

MALICIOUS

PDF

42.7 KB Created: 2020-03-30 14:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 7aa131cd6c4dacbb76b606e730b52788 SHA-1: 7710043cf3ae0e39a60b16e6c0ae933516e3d0f4 SHA-256: 43e3d9ee0643837581778859159fab17d562b81d9bbb7e7766230825f4f5df71
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, suggesting a link-farming or redirection scheme. The document body itself is heavily obfuscated but contains a reference to one of the external URLs, indicating an attempt to direct the user to malicious or SEO-manipulated content. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://richter-family.rominastiebenphotography.com/uploads/1/3/0/4/130483830/130483830.html#expected+outcomes+for+risk+for+bleeding PDF link annotation
    • http://thunderbirdsupplies.com/uploads/1/3/0/5/130589121/fowasef.pdfIn PDF document text
    • http://hollywoodinteractive.com/uploads/1/3/0/9/130969044/8668150.pdfIn PDF document text
    • http://crittendenrefwest.com/uploads/1/3/0/6/130605273/voteritipezebakuw.pdfIn PDF document text
    • http://bullyingaway.org/uploads/1/3/0/6/130620478/sokenisit.pdfIn PDF document text
    • http://harringtonchiropractic.net/uploads/1/3/0/8/130874608/3282148.pdfIn PDF document text
    • http://celtom.com/uploads/1/3/0/2/130289392/vasanologogajapi.pdfIn PDF document text
    • http://newenglandtaxserv.com/uploads/1/3/0/6/130639409/8440917.pdfIn PDF document text
    • http://lifeinasimulation.com/uploads/1/3/0/5/130588352/5502678.pdfIn PDF document text
    • http://www.centraliltheatre.com/uploads/1/3/0/2/130271060/2b9a33fe52.pdfIn PDF document text
    • http://staticlifeband.com/uploads/1/3/0/6/130621371/ee9bb.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F90 7852 bytes
SHA-256: 176cc866348fd1a1111c30b04e1c1b09083ef7f2f679fb1be85146eb5a7bbf8e

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