Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc689483b682ed61…

MALICIOUS

PDF

38.8 KB Authoring application: SWFTools
MD5: 626a5c237066a86cab7aafe0683aec40 SHA-1: f2705cbe657ae674f694e6a4d847035dfbb5ceda SHA-256: cc689483b682ed617eca12a60994546eb36d5c54c553ab7fbe7df4fb665d9ca9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified as a 'link farm' by heuristics. The document body, though containing garbled text, also lists these external PDF URLs. This suggests the primary purpose is to redirect users to a network of malicious or spam-related content hosted on various domains. The ClamAV detection further supports its malicious nature.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://parkandvinyl.com/uploads/1/3/0/4/130488934/xosuvozad-nugul-lekezen.pdf
    • http://condex99.club/uploads/1/3/0/6/130620395/rimazuwufuruxu.pdf
    • http://cwcphysio.com/uploads/1/3/0/6/130620387/a51a51d.pdf
    • http://mrsdsmithsthirdgrade.com/uploads/1/3/0/5/130539990/ferepakubatabuv-fuzokasev-golixakatazate-dedofopo.pdf
    • http://aclarkphotography.com/uploads/1/3/0/6/130622027/21cfe.pdf
    • http://polohouston.com/uploads/1/3/0/5/130544191/4787057.pdf
    • http://rkzhara.ru/uploads/2020/01/27/linewalikabuwanigug.pdf
    • http://myannuityguru.com/uploads/1/3/0/4/130483402/5433675.pdf
    • http://ultracooltrends.com/uploads/1/3/0/6/130640231/gubogupuluze.pdf
    • http://circlewelder.com/uploads/1/3/0/4/130483872/130483872.html#runescape+agility+guide+1+99

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001206.bin
8aba0efd06767f914d3e89acc1a7f7d01106cb167459a2ebb8cccd5011be9de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1206 8080 bytes

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