Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a1a0c049c2160b5…

MALICIOUS

PDF

34.4 KB Created: 2020-05-11 03:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6f661957f8e5f747e0add80e93acb9b2 SHA-1: 642a685e5bc7ed96082e76a7eb8ffae85c99ff9d SHA-256: 4a1a0c049c2160b5b29f0664a327ff4f6fe57d95735fe29d039ccab31e159287
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links to external websites, disguised as interview questions and answers. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a link farm or SEO spam tactic. The primary purpose appears to be driving traffic to these malicious domains, likely for further exploitation or phishing. 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://agpmav.com/uploads/1/3/1/4/131438692/131438692.html#behavioral+interview+questions+and+sample+answers
    • http://hitchcockhealth.com/uploads/1/3/0/2/130289738/pivajiwumizilesit.pdf
    • http://photoclubofquailcreek.org/uploads/1/3/0/5/130546742/tobaxed.pdf
    • http://kerstinandlaw.com/uploads/1/3/0/8/130874598/favodaluvegutuw_zusaja_gukubuxepaweli_jilomelikilor.pdf
    • http://pt-comedy.com/uploads/1/3/0/6/130604386/mamaxagevalef.pdf
    • http://iapicca.ch/uploads/1/3/0/4/130436145/b05e7.pdf
    • http://bodymindcoffee.com/uploads/1/3/0/8/130874148/bowawejatuki.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off00006044.bin
c0d0b427334c9e12d7cf57b0291c566844701e1d2c747874b9663d5a8d2ceaf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6044 9332 bytes

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