Malicious PDF — malware analysis report

Static analysis result for SHA-256 f25119bfd3e855e0…

MALICIOUS

PDF

34.2 KB Created: 2020-05-19 15:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8391edc76e185f875eb0de47be5a39f5 SHA-1: a1ac352ebfc7642fe265a13a6b1f6a543b3a2bfd SHA-256: f25119bfd3e855e0f076f50dbff6136f2682bb54270cf854881cc746dfc08633
62 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 hosted on newly created domains and appear to be part of a link farm. The document body displays a deceptive message suggesting an Excel error, likely intended to trick users into clicking the embedded links. These links lead to further PDF documents, suggesting a multi-stage lure or redirection process. 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://blacksspoower.com/uploads/1/3/0/7/130776659/130776659.html#excel+cannot+start+the+source+applic
    • http://shamrockbusinesscentre.com/uploads/1/3/0/6/130620950/wurodadumagenafapi.pdf
    • http://clearwatergrillcatering.com/uploads/1/3/1/6/131636927/likaxuz-wofepoju.pdf
    • http://hedgeappleweb.com/uploads/1/3/1/3/131383933/dafajo.pdf
    • http://happytechscore.com/uploads/1/3/0/2/130271087/ff4ba6fe39.pdf
    • http://nolaclay.com/uploads/1/3/0/9/130969658/jowunafeza_buwezojirebi.pdf
    • http://wineguide.world/uploads/1/3/0/7/130775424/6748478.pdf
    • http://newvisionsinvideo.com/uploads/1/3/0/2/130289494/322591889.pdf
    • http://rf-consultora.com/uploads/1/3/1/1/131163640/vudak.pdf
    • http://flexipcodrivers.com/uploads/1/3/1/4/131454305/podawojara-famejasoro.pdf
    • http://clearsignsinterpreting.com/uploads/1/3/0/2/130274166/a10fe2845a.pdf
    • http://slibtec.nl/uploads/1/3/0/2/130288391/wewopusajujotijume.pdf
    • http://atsservices.org/uploads/1/3/0/6/130603892/mexuberagepowet-rukumoxumuf-mumeferozobikaf.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_off00005a2b.bin
32d670ed4c40a5729ccbbffcea39ba2c67c6e1dad365232f778d45d77bec1a4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2B 10404 bytes

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