Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d1ec7920c008587…

MALICIOUS

PDF

35.1 KB Authoring application: Mobipocket Creator
MD5: a65f5cb1ab15babea24d87588d59da9a SHA-1: b549dc244060f3280c9558696ee8628aafd3622e SHA-256: 8d1ec7920c008587d55eac4130b29dd69a06d195effc7fe3fdd12f2b295618e1
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files, indicating a link farm designed for SEO manipulation or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic redirection scheme. The presence of a visual download button further supports the lure-based attack pattern.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://sustainabu.org/uploads/1/3/0/4/130436337/jiwedilugow_sitejujebutozi.pdf
    • http://personalblogmadt.com/uploads/1/3/0/4/130436204/346d58dfc4.pdf
    • http://xanderhouff.com/uploads/1/3/0/6/130621853/fudebibizusutena.pdf
    • http://onlinemobiletrainer.com/uploads/1/3/0/3/130324092/5929320.pdf
    • http://peoplemail.net/uploads/1/3/0/2/130270951/desotutozutizak.pdf
    • http://gwcustomsbrokers.com/uploads/1/3/0/6/130604241/sapiwenefeje_fozinimesifi.pdf
    • http://us.momotombochocolatefactory.com/uploads/1/3/0/5/130588257/130588257.html#adobe+pdf+export+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000112d.bin
f0129212d392f963b8989d0edf81f84e7736769039f90e025c220cf49eb9307b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112D 8484 bytes

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