Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c01fdc7cef5510a…

MALICIOUS

PDF

32.9 KB Created: 2020-05-30 03:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e908691bb6566e77339c8b0ba68dbbde SHA-1: f99aa4535c25a630ba6833f27b2271d476b824b0 SHA-256: 1c01fdc7cef5510aed6efeb18ef4c018073af0ccb41cd111198e8e3442d96cdd
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are hosted on domains with numeric or generic slugs, indicative of a link farm or SEO spam tactic. The document body, though heavily obfuscated, contains references to popular media like 'Nobita's dinosaur full movie in tamil', suggesting a lure to attract clicks. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves directing users to external URLs, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://pbjconstructionllc.com/uploads/1/3/0/8/130813571/130813571.html#nobita%2527s+dinosaur+full+movie+in+tamil
    • http://dantearthurs.com/uploads/1/3/0/6/130621257/bd65fd817.pdf
    • http://steamlitedesign.com/uploads/1/3/0/2/130288522/1546037.pdf
    • http://mta-sts.mx.patriciazraidi.com/uploads/1/3/0/8/130814245/5439776.pdf
    • http://autodiscover.gingerscandlecompany.com/uploads/1/3/0/8/130874260/gaxoguba_wakilamok_bobori.pdf
    • http://standingforchristmimers.com/uploads/1/3/1/3/131381066/4f69ff5f5.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_off000054dd.bin
9fa830bde1d8134170ddba196a677c6aea68cdd79cfd4f1447ed7014786fed6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DD 10508 bytes

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