Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e331de69a4825a…

MALICIOUS

PDF

31.6 KB Created: 2020-04-09 17:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 67196e8cf64eb30b98ee1ac81a746792 SHA-1: 5230a41890a9afc3ec92bb8b7cf8cf0e9f76fb5a SHA-256: 59e331de69a4825a7b5d6d8bc1360bdc1f63f715cdef0f78ce2deb91a86523bc
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 on various domains. The document body text, while partially obfuscated, includes a question about carbon dating and references the authoring application and date. This suggests a link farm or SEO spam tactic designed to drive traffic to these external sites. 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://kreativekidsworld.com/uploads/1/3/0/8/130874388/130874388.html#can+carbon+14+be+used+for+dating+lava+flows
    • http://thaiontheisland.com/uploads/1/3/1/4/131406722/656659.pdf
    • http://scentsationsbvi.com/uploads/1/3/0/7/130738780/585918.pdf
    • http://collegeplanningservices.net/uploads/1/3/1/4/131410479/1c836.pdf
    • http://technomadictherapy.com/uploads/1/3/0/2/130289620/4715862.pdf
    • http://derekzhang.net/uploads/1/3/0/5/130541924/ruvezovosikiv.pdf
    • http://logisticacargasespeciales.com/uploads/1/3/1/3/131398102/8978221.pdf
    • http://message6666.com/uploads/1/3/1/3/131379546/nafaw.pdf
    • http://palladianpartner.com/uploads/1/3/0/4/130490078/7bf0ca1d9074717.pdf
    • http://endurancevc.com/uploads/1/3/0/9/130969000/a93fa75c9da2.pdf
    • http://shuttlescancun.com/uploads/1/3/0/8/130814397/bokufakosuninaget.pdf
    • http://kannibalskateboards.com/uploads/1/3/0/6/130639084/kelodurolidup.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_off000052ae.bin
59e8d7cb285f3ba714f7b65c69edcf1537f7547f137133858fa516405322904b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52AE 7428 bytes

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