Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0809611430e069…

MALICIOUS

PDF

38.1 KB Created: 2020-04-07 10:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6b6752f6df46d730b18083586836feb3 SHA-1: 33218a899fd4cefba8dd57535176b4f3bfa34b3b SHA-256: df0809611430e06977a0659d0a8b8d9cf0f05f3e823f09aeba6293d2fa3883c2
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 different domains. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to potentially malicious content or to manipulate search engine rankings. The embedded URLs suggest a tactic to distribute or mask the true malicious payload. 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://misssupremepurityqueen.com/uploads/1/3/1/4/131437873/131437873.html#an%C3%A1lisis+qu%C3%ADmico+cuantitativo+daniel+c.+harris+2da+ed
    • http://wallstreetchefllc.com/uploads/1/3/0/6/130604602/kuwawolesozagajifala.pdf
    • http://artecnica.org/uploads/1/3/1/1/131164011/zegoxanugeloroxosa.pdf
    • http://nextbillionventures.com/uploads/1/3/0/6/130621209/jajaxaxemu.pdf
    • http://aesadministration.com/uploads/1/3/0/2/130274376/8713392.pdf
    • http://kemigroup.com/uploads/1/3/0/2/130272513/numuguvofuxi.pdf
    • http://alonsoquintanilla.com/uploads/1/3/0/5/130588834/950250.pdf
    • http://thechiefendofman.com/uploads/1/3/1/3/131384789/2907358.pdf
    • http://janelmorrison.ca/uploads/1/3/1/3/131384368/5c16cc807ea1.pdf
    • http://bougiehaircare.com/uploads/1/3/0/6/130620956/8797158.pdf
    • http://marketingformula.de/uploads/1/3/0/4/130488069/5726806.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_off00006847.bin
9886bb4cacc005f7b33f14cfdada46c25bbf8c06cd9a4b847561507aff354bbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6847 9036 bytes

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