Malicious PDF — malware analysis report

Static analysis result for SHA-256 e802f7e0169119a1…

MALICIOUS

PDF

31.3 KB Created: 2020-05-17 10:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d3991586f2d2c2bffab91a92b6e94a3 SHA-1: f6a33148b7a4387cb060048141f4418a7ed5906f SHA-256: e802f7e0169119a132dc1dce90b0f38c914cef4a15f8cc2a3a16efd8c0ff9afc
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The embedded document body text and extracted URLs suggest a link farm or SEO spam tactic, potentially leading users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://polarfx.net/uploads/1/3/1/8/131871571/131871571.html#algorithm+analysis+and+design+notes+pdf PDF link annotation
    • http://summitapparelpc.com/uploads/1/3/1/4/131406591/799378c914.pdfIn PDF document text
    • http://qacollective.com/uploads/1/3/0/4/130488983/953683.pdfIn PDF document text
    • http://dayseye.org/uploads/1/3/0/6/130639935/fa0c9b17b65a.pdfIn PDF document text
    • http://westlondontrading.com/uploads/1/3/0/6/130620581/zenuf.pdfIn PDF document text
    • http://foundationbff.org/uploads/1/3/0/7/130740027/65194.pdfIn PDF document text
    • http://alyssagarberwrites.com/uploads/1/3/0/7/130775191/wewuzitiwef.pdfIn PDF document text
    • http://charlesberg.org/uploads/1/3/1/6/131637109/busuwel.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

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_off00004fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCE 10196 bytes
SHA-256: 61d8975973d4712760855a5e46ce748fc1f72e57ea90ac32910d42066de125a5

Open this report in the interactive analyzer, or submit your own file for analysis.