Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85df0c2963c803e…

MALICIOUS

PDF

42.7 KB Authoring application: QPDF
MD5: 4a7d39db4059763a36b5512ba17d2ebd SHA-1: ed67d10eeef524c33917bbbb4d654e40b9bd3f12 SHA-256: b85df0c2963c803e6276582be45001c0106acf1b0dbbd48165847eec26fb46ee
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic redirection intent. The embedded URLs are likely part of a scheme to distribute malicious content or manipulate search engine results.

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://color4home.com/uploads/1/3/0/6/130620745/7576520.pdf
    • http://penu.tele-zvon.ru/uploads/2020/01/29/buwubekafemoju.pdf
    • http://sonnyxyshop.com/uploads/1/3/0/6/130640223/180147.pdf
    • http://powef.smartmeteo.ru/uploads/2020/01/27/1339936.pdf
    • http://clairebunker.com/uploads/1/3/0/5/130588568/pupaxe_weravifagujasu_rufasofijoru_rotane.pdf
    • http://waso.amazon-sellers-check.com/uploads/2020/01/28/1624138.pdf
    • http://pameladirnberger.com/uploads/1/3/0/5/130540897/130540897.html#don%27t+worry+be+happy+ukulele+fingerpicking

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113c.bin
c7dbe9017d68b1f13fae1596cbe48ad049d9b6d68564de56c4b4d97405880dec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113C 8260 bytes
font_01_sfnt_off00006109.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6109 16036 bytes

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