Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbaefca03642b93…

MALICIOUS

PDF

39.5 KB Created: 2020-04-27 04:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7d59b03b5ee9966f9aa3b79970e335e0 SHA-1: cb700134d9ae5d6decd684a4d243bfc545b721fa SHA-256: 2bbaefca03642b93ba3ff9b2935008f3645949e84c908810c3c408ddf4876942
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many of which point to similarly structured URLs on different domains. This pattern is indicative of a link farm used for SEO poisoning or to distribute malicious content. The document body, though heavily obfuscated, contains a URL that matches one of the extracted links, suggesting it's a primary lure. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 3

  • 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
  • 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://ndtasanantonio.org/uploads/1/3/0/5/130540525/130540525.html#bandos+boss+solo+guide
    • http://law-isaac.com/uploads/1/3/0/4/130488073/1751884.pdf
    • http://primmohairstudio.com/uploads/1/3/1/4/131482999/2656f6.pdf
    • http://alliancedirecte.ca/uploads/1/3/0/2/130272240/4478233.pdf
    • http://donnerswimclub.com/uploads/1/3/1/3/131398334/tinamudapene.pdf
    • http://plussizeweddingdressrhodeisland.com/uploads/1/3/0/7/130739561/00e5817e5e.pdf
    • http://cuthills.com/uploads/1/3/0/4/130488158/voxopepululafulilebo.pdf
    • http://davidthealien.com/uploads/1/3/0/6/130621746/4126716.pdf
    • http://coloryoustunning.com/uploads/1/3/1/4/131406578/dimitirulomafinan.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_off0000727f.bin
70065f0584c1de60d146a6cc6e9386a33434f7b1938c519c142ff2c52695e91c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727F 8272 bytes

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