Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e50cd67e0c906b6…

MALICIOUS

PDF

33.0 KB Created: 2020-04-07 07:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7ca66222a1a2ae4c0a3ab6928ac39a7d SHA-1: a4c6ace41544cb0942e0efa91928a325260fcdde SHA-256: 4e50cd67e0c906b6e041e03748db7217318dac0550980266dfc61064f64e1327
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links pointing to various domains, indicating a link farm or SEO manipulation tactic. The primary heuristic firing, PDF_SEO_LINK_FARM, confirms this behavior. The embedded document body text, though partially corrupted, contains a URL that aligns with the observed link farm pattern. No scripts were extracted from this sample.

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://thepidginsnackery.com/uploads/1/3/0/8/130813516/130813516.html#piano+pop+songs+with+letters
    • http://balticgraphics.com/uploads/1/3/1/3/131381240/xaguba-zuwakuvuve.pdf
    • http://happyhomesoftn.com/uploads/1/3/0/4/130488152/zegilufigazax.pdf
    • http://reubenreuben.com/uploads/1/3/0/9/130969297/patisabufufuw.pdf
    • http://hemp919.com/uploads/1/3/1/0/131070167/2238189.pdf
    • http://augustinecolebrook.com/uploads/1/3/0/4/130489771/rirewotaru_gosow_waramedupadu.pdf
    • http://tennishasbeautyconcept.net/uploads/1/3/0/6/130604209/d6cac70b1.pdf
    • http://snaps4life.com/uploads/1/3/0/7/130739745/wijesikurorafarabaxi.pdf
    • http://coisich.com/uploads/1/3/0/6/130604860/2198625.pdf
    • http://chelseahodge.com/uploads/1/3/0/6/130639082/lozipojun-sofifuvitev-zawunokuso-panipofinuz.pdf
    • http://teammojo.pink/uploads/1/3/0/4/130488398/sagapaxab.pdf
    • http://thursdayschildsailing.com/uploads/1/3/0/5/130588987/mopob.pdf
    • http://zemitausa.com/uploads/1/3/1/4/131406686/841721.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005214.bin
ced28fd5425de8ef4e2fa964294d09303bea8a99dfbe8af4d8fcc54bf405b41c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5214 7264 bytes
font_01_sfnt_off00006e93.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E93 1708 bytes

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