Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1e185f956ea075c…

MALICIOUS

PDF

36.6 KB Authoring application: OpenOffice Draw
MD5: 4c2312d0d69d218e462c461fdf06b52e SHA-1: aaf2356586da7ea3193e1a34a0035f5d3fd7fd4a SHA-256: a1e185f956ea075c5fff9bb122c899f8241adfd07a5707f292496854c8848a32
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. The heuristic 'PDF_SEO_LINK_FARM' indicates this is a link farm, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The ClamAV detection further confirms its malicious nature, classifying it as 'Pdf.Phishing.TtraffRobotInstall'. 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.
  • 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://zesobeno.moskovskiepotolki.ru/uploads/2020/01/28/1776488.pdf
    • http://charleschien.com/uploads/1/3/0/6/130640116/guzetomobe.pdf
    • http://craigweflen.com/uploads/1/3/0/4/130436483/7119428.pdf
    • http://mauritskoelewijn.nl/uploads/1/3/0/5/130588727/sutatesemana.pdf
    • http://northernlightspace.com/uploads/1/3/0/6/130621441/0e671b9b5f.pdf
    • http://studio10saloncolorspa.com/uploads/1/3/0/2/130274154/48861f7c230b0cd.pdf
    • http://reboundat.com/uploads/1/3/0/6/130605255/130605255.html#gta+cheats+pc+vice+city

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010da.bin
70a3647462328657affeb6f56a4709e0fe6cae3ec7f69cce1dc3b5911144b980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA 8120 bytes

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