Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ace99f2a5f3a741…

MALICIOUS

PDF

37.1 KB Authoring application: pstoedit
MD5: 06d9e6d89615f938a221fb46ae2abb3d SHA-1: 640cc2f100888ed0481421f766071df7c8eb89d7 SHA-256: 0ace99f2a5f3a741ed0faf572ad4d7f0752fcc8adb8f35179d6be74ddddb1e1c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO abuse. While no scripts were explicitly extracted, the structure suggests potential for JavaScript execution within the PDF to facilitate these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mymoneycoach.co.uk/uploads/1/3/0/5/130590496/lokurunijiduri.pdf
    • http://michaelgierl.com/uploads/1/3/0/6/130620471/jugomoxulibejep.pdf
    • http://restaurantelallorona.com/uploads/1/3/0/4/130489070/limedugajowin-dezobotu-wefeb.pdf
    • http://amatowoodcrafts.com/uploads/1/3/0/5/130589128/xuwawobujosaf_zomoluri_boripirabi_besupetigozoz.pdf
    • http://justpujasamagri.com/uploads/1/3/0/2/130287872/fijonariku.pdf
    • http://babymyo.com/uploads/1/3/0/8/130815097/1179628.pdf
    • http://us.momotombochocolatefactory.com/uploads/1/3/0/6/130604630/130604630.html#south+america+political+map+games
    • 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_off0000113f.bin
add80b38913b7247179263f801fb06e17300623ca6ea2ce368b4c6a77f29a4cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113F 8596 bytes
font_01_sfnt_off00004965.bin
ff27d99f049fa5ec83b4c3710afe1f9aee00eb20942a9349d435d4ca5ad10f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4965 16388 bytes

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