Malicious PDF — malware analysis report

Static analysis result for SHA-256 132e0eb3eb419456…

MALICIOUS

PDF

46.6 KB Authoring application: Inkscape
MD5: 6461e00ee2a3cb1f243d705fa01bc1b9 SHA-1: 65d580aa4141ff0608ff73b00f287ccd5c2bb1c1 SHA-256: 132e0eb3eb4194567cdc1326f98284588d8a5bc69677a5263d7dcefbcda7574d
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to redirect users to numerous other malicious PDF files, likely for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_RANDOM_URL_LINK' strongly indicate this malicious intent. The embedded URLs and the ClamAV detection further support the classification as a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://warsfitness.com/uploads/1/3/0/3/130323599/tozerazeme.pdf
    • http://principalwebmarketing.com/uploads/1/3/0/5/130590217/c6ebaeb309.pdf
    • http://papomundo.org/uploads/1/3/0/6/130639840/33516f.pdf
    • http://myskiped.com/uploads/1/3/0/2/130289184/9cba58389818c.pdf
    • https://livugopirakap.weebly.com/uploads/1/3/0/3/130379635/b0fb9e04.pdf
    • http://sonjalanehart.com/uploads/1/3/0/6/130605373/d32735cf3e2d.pdf
    • http://eliteculinarychef.com/uploads/1/3/0/6/130639114/paveges.pdf
    • http://pafufizoj.legitimateparttimeworkfromhome.com/uploads/2020/01/29/8905803.pdf
    • http://sponsorforhire.com/uploads/1/3/0/5/130590400/d0dfbcc95c.pdf
    • http://thriftstorehemet.com/uploads/1/3/0/6/130603853/xelesusigopexanugu.pdf
    • http://nashobavalleyextractco.com/uploads/1/3/0/4/130483725/130483725.html#crave+tv+roku+code
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b9.bin
13c8586a8e3da0d55e1ef5a27fd67a774c1ac32f3413dfe0be58ae3a58f71ffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B9 9288 bytes
font_01_sfnt_off00006eb6.bin
6780d9549b68c80a48e37d6f12492b60697184fa3df393e2feaeba9a5da12156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB6 16352 bytes

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