Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc0b19f725bd059…

MALICIOUS

PDF

34.2 KB Created: 2020-06-17 01:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e8bbf3cbe65c7ea9e74bb91d414de13 SHA-1: c1dae0aa7547eecccb092129f76a2213343c3ed5 SHA-256: fcc0b19f725bd059a5bf43e57c96465c5d2ccb07392d8eed3828e4dedc67f051
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on unrelated domains. This suggests a link farm or SEO poisoning tactic. The document body itself contains seemingly random text and URLs, further supporting the idea that the primary purpose is to direct users to a network of external resources. 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://neptuneinvesting.com/uploads/1/3/0/7/130775242/130775242.html#sub+zero+501r+refrigerator+manual
    • http://tullycross.net/uploads/1/3/1/3/131398176/rofexoponi.pdf
    • http://mail.bomberheights.org/uploads/1/3/1/8/131871835/segepekelamuvew-xikavomibanuk-gojebijatoxemu-fipefek.pdf
    • http://guywithbackpack.com/uploads/1/3/0/3/130379141/3489037.pdf
    • http://mailserver.naftec.co.uk/uploads/1/3/0/5/130588786/kedubisebebizanime.pdf
    • http://pjpetcare.uk/uploads/1/3/0/4/130436306/080a73b641d.pdf
    • http://pipeline-consulting.com/uploads/1/3/0/7/130775635/renugamujepe.pdf
    • http://cassiusmaintenance.com/uploads/1/3/1/3/131380894/8508412.pdf
    • http://ordinariatesouthmanchester.com/uploads/1/3/0/7/130775640/4570433.pdf
    • http://wolfecityhomecoming.com/uploads/1/3/0/3/130379049/vigira.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_off000049ac.bin
37347c9e1213458ba4c5c34643fcbf9e83edca920bc0d7e67c8226b37cfefaeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49AC 5404 bytes
font_01_sfnt_off00005c01.bin
98fdedc9204deae525ad5c1ff855eaff982ac5a788d704f013db911221728997		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C01 9660 bytes

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