Malicious PDF — malware analysis report

Static analysis result for SHA-256 792b96eb933151d1…

MALICIOUS

PDF

53.2 KB Created: 2020-04-10 00:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7c3f503c3ecfea4c0294c030be43ca1c SHA-1: 4b04142802bd4baaad5a23066fe1677ec71a9c0a SHA-256: 792b96eb933151d141590d94e26e76631d06da220519d2e87066007acbbf92f2
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO poisoning to drive traffic to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior. The embedded document body text, though heavily obfuscated, contains references to URLs that are also present in the extracted URL list. No scripts were extracted from this sample, limiting further analysis of its direct payload delivery mechanism.

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://ebmccallanbuildingltd.com/uploads/1/3/0/8/130813320/130813320.html#gifford+mcmahon+cryocooler
    • http://swussports.com/uploads/1/3/0/7/130740456/vozobewuna.pdf
    • http://conversational-spanish-for-adults.com/uploads/1/3/0/5/130590295/55e8b899a3.pdf
    • http://acetronindia.com/uploads/1/3/0/5/130590051/jupuwokorak-nasezo.pdf
    • http://royalsignatureinsurance.com/uploads/1/3/0/6/130621979/momabowod.pdf
    • http://floralsenterpiece.com/uploads/1/3/0/4/130490977/6a3e5837.pdf
    • http://pmdjoinery.net/uploads/1/3/0/9/130969048/lisix.pdf
    • http://dynatechconsulting.com/uploads/1/3/1/0/131071072/3699209.pdf
    • http://voyage2memories.com/uploads/1/3/0/5/130551534/xuzazusibu.pdf
    • http://philipsjohnson.com/uploads/1/3/1/4/131453251/4705c85cb92e5e.pdf
    • http://copydemon.com/uploads/1/3/1/4/131453480/kituviwebosoduma.pdf
    • http://morganixrig.com/uploads/1/3/0/6/130604501/b7ed2ee17569.pdf
    • http://parachute425.com/uploads/1/3/1/4/131453695/xuzagekogaxadusiwud.pdf
    • http://cyber-snax.com/uploads/1/3/0/8/130873849/7645088.pdf
    • http://bacollars.ca/uploads/1/3/0/5/130590157/108cb2cc7.pdf
    • http://broke-guys-guide.com/uploads/1/3/1/3/131379444/kozikutig.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_off000090ab.bin
8b1abfcb611f455678f9cb68ada0f2874029b22826a4b6f52f9f80d9ad954448		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90AB 8552 bytes
font_01_sfnt_off0000b197.bin
2b47d2b98ece58f022c5ea0fd14ea538c0c6fb8d5d01f9c059cc9dc7c4bc580d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB197 16240 bytes

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