Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e8c76a70679460…

MALICIOUS

PDF

38.2 KB Created: 2020-04-03 01:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8e06458f0a91862fcfe98e0c8fe067fa SHA-1: 36e2fc4474b4cb65b8cafac9d9ec35795d05e958 SHA-256: f2e8c76a706794608caf4bc1e6c198aac2abe46d4239a111f04bf22b796d29b4
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 numerically or generically named, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains URLs that appear to be disguised as academic or resource links. The presence of a PDF_SEO_LINK_FARM heuristic firing strongly indicates a malicious intent to drive traffic to potentially harmful sites.

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://michaelwellsart.com/uploads/1/3/0/4/130488754/130488754.html#human+physiology+stuart+ira+fox+14th
    • http://zionbasketball.com/uploads/1/3/1/1/131164202/7125486.pdf
    • http://rootedsunshinetraining.com/uploads/1/3/1/1/131163996/goxuk_fusidituku_vulujavameb_gitumixozadez.pdf
    • http://empoweringfamiliesllc.com/uploads/1/3/0/3/130323298/8a8e91c97ee76.pdf
    • http://danceofthemagi.com/uploads/1/3/0/9/130969368/jirawija.pdf
    • http://bitapourtavoosi.com/uploads/1/3/0/7/130775071/jijiwujefasaveb_rafegeteta.pdf
    • http://enactum.net/uploads/1/3/0/4/130435518/kurunukez-zofesi-piretoninas-gurasoboso.pdf
    • http://msgf1.com/uploads/1/3/1/4/131453176/5655188.pdf
    • http://thrivingventure.com/uploads/1/3/0/9/130968988/faxoder.pdf
    • http://rachelkelleyap.com/uploads/1/3/0/4/130483390/luzofiduzofogekogil.pdf
    • http://theemafoundation.com/uploads/1/3/1/3/131379381/kebezo.pdf
    • http://tinfarms.com/uploads/1/3/0/7/130740508/1143823.pdf
    • http://flametreecommunications.net/uploads/1/3/1/3/131378918/2cc141c718f9f05.pdf
    • http://communityassociationcpas.com/uploads/1/3/0/8/130873841/9131581.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_off000063bb.bin
8d8082049885a819c9124f7a7eed9a5a4707b1b2b6b4e4055da4ff961ae0cb7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 7940 bytes
font_01_sfnt_off000082aa.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AA 1708 bytes

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