Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba7a548e2cd8b9d…

MALICIOUS

PDF

40.8 KB Created: 2020-03-20 12:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 895ea3eead02cd3ffeca18772103f5bf SHA-1: 1b2b4f5004fdfa287892b8bd9833c76db4f6b5cd SHA-256: 9ba7a548e2cd8b9d9201c0ed9003f2b2b008c60873a757d3077dcef1f60f5e75
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential attempt to distribute or host harmful content across numerous domains. 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://marasworld.blog/uploads/1/3/0/4/130483981/130483981.html#acute+critical+limb+ischemia+icd+10 PDF link annotation
    • http://firstclassdetailgalv.com/uploads/1/3/0/6/130620979/512117.pdfIn PDF document text
    • http://strongpeopleprogram.org/uploads/1/3/0/5/130588678/6751976.pdfIn PDF document text
    • http://www.le-manuel-du-tage-2.fr/uploads/1/3/0/5/130588493/8959533.pdfIn PDF document text
    • http://bimzaos.com/uploads/1/3/0/5/130550952/5413557.pdfIn PDF document text
    • http://pronetworks.us/uploads/1/3/0/8/130873944/446085.pdfIn PDF document text
    • http://jottot.net/uploads/1/3/0/5/130550901/susupu.pdfIn PDF document text
    • http://nuclearoven.com/uploads/1/3/0/3/130324136/pekaj.pdfIn PDF document text
    • http://genasurphlis.com/uploads/1/3/0/6/130621325/zatamibat.pdfIn PDF document text
    • http://pullingforhealth.com/uploads/1/3/0/7/130738667/28c8ec9a39cd030.pdfIn PDF document text
    • http://irpimpianti.it/uploads/1/3/0/7/130739247/3403260.pdfIn PDF document text
    • http://southernfertilityandsurgery.com/uploads/1/3/0/7/130775589/molapami.pdfIn PDF document text
    • http://www.activecare.co.nz/uploads/1/3/0/5/130546885/9173903.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
🗂 Part of campaign: genasurphlis.com 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E11 7960 bytes
SHA-256: 092b1e3b3bd2cd44a543148c7990d617ac8ca89170e6ec8645c2e04f9b17fe0d
font_01_sfnt_off00008ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE4 2600 bytes
SHA-256: 41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee