Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcda67ab8c32a040…

MALICIOUS

PDF

50.3 KB Created: 2020-04-11 11:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 87817de81fb5bf15d1726aaeae1bceb3 SHA-1: 74798449a5a05ae8bf399546d0c1270c818774a1 SHA-256: fcda67ab8c32a0400ea00f13b495198095f6abce192e2a8d4d34924367c76d5d
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 point to other PDF files with numeric slugs, indicative of a link farm or SEO spam tactic. The document body also contains a URL that appears to be a lure for a free album download. The primary heuristic identified a "PDF_SEO_LINK_FARM" which suggests the document is part of a larger network designed to artificially inflate search engine rankings or distribute malicious content. The embedded URLs are likely used to redirect users to malicious sites or download further payloads.

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://oxnard-photography.com/uploads/1/3/0/7/130776648/130776648.html#the+carter+4+free+album+download+zip
    • http://chasinghappy3.com/uploads/1/3/0/7/130739962/4a12066.pdf
    • http://mobilecardetailingsimivalley.com/uploads/1/3/1/4/131437243/torutofo.pdf
    • http://asunburntcountryproject.com/uploads/1/3/0/5/130540507/zivogaxupinofaraxo.pdf
    • http://bootslikemine.com/uploads/1/3/1/1/131163691/5995654.pdf
    • http://grupomusical.org/uploads/1/3/0/5/130540266/3217921.pdf
    • http://adamhenryink.com/uploads/1/3/1/4/131438156/joligoweruk.pdf
    • http://kaninpaletten.com/uploads/1/3/0/6/130620833/nawikopisapozod.pdf
    • http://blservic.es/uploads/1/3/0/7/130740262/2186229.pdf
    • http://hopeenterprisellc.org/uploads/1/3/0/6/130640191/sewejurilepiduzukim.pdf
    • http://williamrjohnston.com/uploads/1/3/1/0/131069860/02df4e476a4.pdf
    • http://sbilzi.com/uploads/1/3/1/0/131071181/3aa9a5966602.pdf
    • http://iescfl.com/uploads/1/3/0/5/130551472/fedovameworulo.pdf
    • http://underthestone.org/uploads/1/3/0/9/130969226/5046407.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071b6.bin
39892cff1e851445039b82eae1097cd1714d1369a6dfad073e564cb18f3d1b25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 8760 bytes
font_01_sfnt_off000092f5.bin
bb48f2028fe1ad439637a07eb22338af9f1535ec846d773e7d96d9d333a872f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92F5 2644 bytes
font_02_sfnt_off00009c43.bin
9387b45d21fde81e24182dd8c1bc6e08b61522584f9c5deb6d9937a0edeb8c92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C43 1856 bytes
font_03_sfnt_off0000a568.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA568 16036 bytes

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