Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb1c9bf560d47a3…

MALICIOUS

PDF

34.5 KB Created: 2020-05-29 18:04:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0925bfefe376c79c76b2f0711edb134 SHA-1: 1ffe8cb067b41ae513fbff65a85d8b0579a82901 SHA-256: eeb1c9bf560d47a3eb0df699aba542f52c78493c2dde0382887f34fcbe1238b7
94 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 to other PDF files hosted on various domains, indicative of a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. The document body itself is heavily obfuscated and contains some of the same URLs, suggesting an attempt to direct users to potentially malicious or spam-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mainstreetsuitestempleton.com/uploads/1/3/0/6/130605421/130605421.html#fsae+rack+and+pinion
    • http://findanewcareer.net/uploads/1/3/1/6/131637477/2689904.pdf
    • http://yslrecords.com/uploads/1/3/0/4/130436139/8034673.pdf
    • http://booknookblog.org/uploads/1/3/0/8/130815437/d07052ea2fdf14.pdf
    • http://mail.jlpanagopoulos.com/uploads/1/3/0/3/130313123/09675eaa.pdf
    • http://onboardaccel.com/uploads/1/3/0/6/130620657/tizev.pdf
    • http://babyreadybundles.com/uploads/1/3/0/5/130544072/pisoboxuko_xosefoso.pdf
    • http://msjsport.net/uploads/1/3/1/3/131383719/vukusu_vupavofuzuvotiv.pdf
    • http://graysystemsinc.com/uploads/1/3/0/5/130550986/posibejibubitu_zelitunezu_xafapi.pdf
    • http://aloveoftennis.ca/uploads/1/3/0/5/130588589/6719656.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a2c.bin
a110b1b876cc41a3b0e2eaa8d46a75a00841e6b533fd684d3e5ef18c59fbc97f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2C 10816 bytes

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