Malicious PDF — malware analysis report

Static analysis result for SHA-256 0000965c3b2eafba…

MALICIOUS

PDF

66.7 KB Authoring application: Mobipocket Creator
MD5: a162f26c7ca94fb0d299f6cb7243d376 SHA-1: 3d478ff4df3be7a1cceb10051eb91665b91e2433 SHA-256: 0000965c3b2eafba74bde72003754a0f1d3e957be373955fd4aa60f73c7b7df6
160 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, a technique commonly used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The document body, though heavily obfuscated, contains references to downloading free movies, likely a lure to encourage users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://sookeyhairextensions.com/uploads/1/3/0/6/130621425/saruxakejakimol_medegaduziliwin.pdf
    • http://pattyhawkins.net/uploads/1/3/0/6/130621707/godak.pdf
    • http://tatismoving.ca/uploads/1/3/0/6/130604537/4332218.pdf
    • http://frecklemeister.com/uploads/1/3/0/2/130270985/ladada_zanepi_pijajij_mobumogajejuno.pdf
    • http://nautifoods.com/uploads/1/3/0/5/130588613/posoxup.pdf
    • http://benchmarkcoachingapp.com/uploads/1/3/0/5/130539846/49f75.pdf
    • http://leannephilip.com/uploads/1/3/0/6/130639729/vexobidixu.pdf
    • http://ncbestsigns.com/uploads/1/3/0/4/130483591/051c9af0a46430d.pdf
    • http://brownsburgcarwash.com/uploads/1/3/0/6/130621305/e7fcbb3e8f8597d.pdf
    • http://theelfbox.com/uploads/1/3/0/6/130621588/130621588.html#free+hd+movie++for+android+mobile
    • 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_off000012f8.bin
1d2a8fead14fa550ab1c013cb3d1ba30ede80474a01b96b3a44ddc891ed908dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F8 8632 bytes
font_01_sfnt_off0000b7a4.bin
805e4be4fa1936fc2df3120f1db1d07b4222899cb0fb84c4d3d937e3d57c1a0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A4 18916 bytes

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