Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf9bf7d9a73edf8…

MALICIOUS

PDF

38.3 KB Created: 2020-03-31 01:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 94b7f58bc4cb529e00c187af09bd161e SHA-1: 9bf08fda4a7e2fd272066db1a208cb86d8e07c6c SHA-256: faf9bf7d9a73edf86656d220114e4c212947afd71d40f36d695476df5be3da32
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains references to 'Krav Maga techniques step by step pdf' and numerous URLs pointing to similarly structured PDF files on various domains. This indicates a likely attempt to drive traffic to these external sites, potentially for malicious purposes such as phishing or malware distribution.

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://angelawelham.com/uploads/1/3/0/8/130874192/130874192.html#krav+maga+techniques+step+by+step+pdf PDF link annotation
    • http://stpeterbaptistchurch.org/uploads/1/3/0/2/130288811/lagoparit.pdfIn PDF document text
    • http://groupdownload.com/uploads/1/3/0/5/130550805/6779582.pdfIn PDF document text
    • http://writerjacksanders.com/uploads/1/3/0/5/130588287/8022775.pdfIn PDF document text
    • http://mennicohendiamonds.com/uploads/1/3/0/7/130776719/6f58c64fa5162.pdfIn PDF document text
    • http://abeautifulmesstx.com/uploads/1/3/0/7/130740084/xefedevitub_dawas.pdfIn PDF document text
    • http://jimmyfitzpatrick.com/uploads/1/3/0/6/130621525/7d847ab08.pdfIn PDF document text
    • http://totalroyalhealth.com/uploads/1/3/0/5/130547884/zipebudo.pdfIn PDF document text
    • http://stevensonsconglomerategroup.com/uploads/1/3/0/3/130323214/dasovomugan-nupub.pdfIn PDF document text
    • http://conversational-spanish-for-adults.com/uploads/1/3/0/5/130545733/bfb1e15c750.pdfIn PDF document text
    • http://productsbeyond.com/uploads/1/3/0/2/130270845/286266.pdfIn PDF document text
    • http://flavoredsprinkle.com/uploads/1/3/0/6/130620892/5439013.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E02 7892 bytes
SHA-256: e0d7f4259860d10eed8dbcaac7fdbbbca5950af26afffb810d9d2e3b89995750