Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d45a53b8f6c9384…

MALICIOUS

PDF

36.1 KB Created: 2020-04-18 09:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c910b5810ac953b9e22b6339839d0499 SHA-1: f869fa170937db86e5b63f5acb328254cfffafd1 SHA-256: 1d45a53b8f6c93847eceb1dc8de77eb6ac78a6b1134c5193c0d2893e5bc58899
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of external links to other PDF documents hosted on various domains, consistent with a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the sheer volume of external links suggests a malicious intent, possibly to distribute further malware or engage in phishing. The document body contains garbled text and a reference to 'Bhole baba ki photo', which appears to be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://digitaldocmd.com/uploads/1/3/0/6/130622029/130622029.html#bhole+baba+ki+photo
    • http://rmerc.com/uploads/1/3/1/6/131637695/1ea4ba8ba79.pdf
    • http://aristohomestay.com/uploads/1/3/1/3/131381819/fowelemewavi-roner-neberi.pdf
    • http://nikola-dusana.de/uploads/1/3/0/6/130604042/gumevowuxabep.pdf
    • http://moreyhomeinspections.com/uploads/1/3/0/7/130740184/3114836.pdf
    • http://alignedlawja.com/uploads/1/3/0/5/130541661/badov-newabolan-zujedezad.pdf
    • http://what-god-wants.org/uploads/1/3/1/3/131379741/filugon.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_off0000694f.bin
5409a139861fddcdf13b1fcdc58e0b57f2258c71d7fe7b58840cdfe3d11e0e78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x694F 7096 bytes

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