Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a77d3f25067a41…

MALICIOUS

PDF

49.3 KB Created: 2020-04-09 20:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 938d7d0091a103e2c69ffa9a4a8f8fd1 SHA-1: 825666e2bb594a0c6c1978a77bb299bce263c10e SHA-256: 78a77d3f25067a417f5a5bdec586e6598063dbc9fc54597f18bc000a7aeb45bb
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, characteristic of a link farm or SEO spam technique. The primary heuristic identified a mass of external PDF links, suggesting an attempt to drive traffic to a network of sites. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine a more specific purpose beyond link distribution.

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://sussexeagles.com/uploads/1/3/1/4/131409794/131409794.html#amor+de+criatura+sitter+tumangaonlin
    • http://stephensonfinancialservices.com/uploads/1/3/1/3/131398606/fopolokavojukex_savebakovaxiwub.pdf
    • http://sbthriftt.net/uploads/1/3/0/3/130323888/zatumokojolewez.pdf
    • http://wristart48.com/uploads/1/3/1/3/131397973/4398438.pdf
    • http://verenafood.com/uploads/1/3/0/7/130739598/jevotiru_pegipirepej.pdf
    • http://preemptivestrike01.com/uploads/1/3/1/1/131164557/vekizikefuz.pdf
    • http://millermediafilms.com/uploads/1/3/0/6/130604687/mujeboraxurijo.pdf
    • http://grassrootsmassage.com/uploads/1/3/0/9/130969710/xevune.pdf
    • http://letsplayfarsi.com/uploads/1/3/0/5/130588258/wevijaragufi.pdf
    • http://rachelreding.net/uploads/1/3/0/4/130436492/9dd8258482430.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_off00009185.bin
a878a3cec30f9e10572e0db7cf2e59c7b2c601c8490f160160b76ee67ac99f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9185 11816 bytes

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