Malicious PDF — malware analysis report

Static analysis result for SHA-256 2714c474db0506db…

MALICIOUS

PDF

43.3 KB Created: 2020-04-11 00:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: a380fa1a6c1a29162b96e12dd02cb55f SHA-1: 7b9b166fb1e451e439cc4ae2da5cce55b538a7be SHA-256: 2714c474db0506db1d254555a3ab0f7f078cf468be5c486023b8e1a3329bd53c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though partially corrupted, contains text suggesting it is a 'Buick century repair manual pdf', which serves as a lure to entice users to click on the malicious links. The ML classifier strongly indicates maliciousness, and the presence of multiple unknown external URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://shopbelfast.info/uploads/1/3/0/5/130546645/130546645.html#buick+century+repair+manual+pdf PDF link annotation
    • http://scaredtosacred.info/uploads/1/3/0/6/130621554/65434119.pdfIn PDF document text
    • http://bellinghambc.org/uploads/1/3/1/4/131453216/togudirogox-bebeles-wudorufo.pdfIn PDF document text
    • http://widowcoachingwidows.com/uploads/1/3/0/2/130271259/1174538.pdfIn PDF document text
    • http://youinchrist.com/uploads/1/3/1/4/131452750/mikogixaj.pdfIn PDF document text
    • http://geo-centric.co/uploads/1/3/1/3/131383837/1656647.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A90 8824 bytes
SHA-256: 3c60661fcea268314e38780a2bcd7695a93844c5d40216bb6bad8916b3b88aaa
font_01_sfnt_off00008c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C26 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d