Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5892f9bbe14d0d8…

MALICIOUS

PDF

40.1 KB Created: 2020-04-10 01:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: edc47f06857fbc0f8529ccaa5ebecfaf SHA-1: 9fdd0eab7808bb565579c783fbe36ebddda3d06d SHA-256: e5892f9bbe14d0d809571dcdfffd750358061827f187598c91047c2df0e3cf81
94 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 text explicitly mentions 'Computer hacking course in urdu pdf', which is likely a lure to entice users to click on the embedded malicious URLs. The ML classifier strongly flagged this PDF as malicious.

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://realtexaswines.org/uploads/1/3/1/3/131398576/131398576.html#computer+hacking+course+in+urdu+pdf
    • http://sirbonifurnishings.com/uploads/1/3/1/3/131381489/bc72316c2770.pdf
    • http://pmsellers.net/uploads/1/3/0/4/130483244/1396631.pdf
    • http://hilaryeerb.com/uploads/1/3/0/6/130640220/0656d9837ae63.pdf
    • http://serenityhome.services/uploads/1/3/0/9/130969149/525471.pdf
    • http://newstartertosmarter.com/uploads/1/3/1/4/131437341/25d98644be9209.pdf
    • http://alanktran.com/uploads/1/3/0/5/130541677/8d1137.pdf
    • http://mgprott.com/uploads/1/3/0/4/130490218/b2bd3.pdf
    • http://hotelleparisnoumea.com/uploads/1/3/0/5/130588880/zuzeg_tetesadida.pdf
    • http://trebermuda.com/uploads/1/3/0/7/130739945/a39906e0.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_off00007423.bin
7e8316fa0bdee60a0125d86dc5975ce10315837ba6dca8a10c465af4284d6ae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7423 8144 bytes

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