Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d336d0e8edd09f1…

MALICIOUS

PDF

36.1 KB Authoring application: pstoedit
MD5: ed27cf844162fd462cdc227ef42edc5e SHA-1: 11ba28e28615bc1cd8236a38a52c3ea3e8eb7109 SHA-256: 8d336d0e8edd09f10bcae27b40c172761031cb303601936e4986afbdafb88701
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical rule for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The embedded URLs point to a large number of other PDF files hosted on various domains, suggesting a coordinated effort to distribute malicious content. The document body contains garbled text, indicating it is not intended for human consumption but rather as a lure or container for the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.aiscracing.com/uploads/1/3/0/4/130488831/8a5a3f2c46d02.pdf
    • http://voligoinc.com/uploads/1/3/0/6/130604016/jiruzevo-defimevunarev.pdf
    • http://charliechortle.com/uploads/1/3/0/5/130588258/wabazifun-mejusejat.pdf
    • http://omcr.org/uploads/1/3/0/7/130775563/f98d26c78.pdf
    • http://quotes-n-quips.com/uploads/1/3/0/3/130313049/jadupibefuled.pdf
    • http://cigarclubmodesto.com/uploads/1/3/0/5/130588907/lipiwinapidosu.pdf
    • http://mwwrenovations.net/uploads/1/3/0/7/130738647/35e8b012c412.pdf
    • http://hostmaster.printartadv.com/uploads/1/3/0/3/130379135/vojitosan_dekuzupote.pdf
    • http://www.campicon.com/uploads/1/3/0/7/130775700/jolarirubitonu_kosabo_gewoxul.pdf
    • http://krowncustomcues.com/uploads/1/3/0/7/130775677/wuvotopomokefolezob.pdf
    • http://zonemaster.mind2create.nl/uploads/1/3/0/4/130483320/5665648.pdf
    • http://www.rentzjewelry.com/uploads/1/3/0/6/130620407/pipez.pdf
    • http://www.romanaroundthisworld.com/uploads/1/3/0/9/130969427/kapagusubolara.pdf
    • http://engineeringally.com/uploads/1/3/0/4/130435638/8241996.pdf
    • http://www.compass-cps.com/uploads/1/3/0/5/130544136/kokibir_mevebofalu.pdf
    • http://prestomagictravel.voyagerwebsites.com/uploads/1/3/0/7/130776308/130776308.html#kumpulan+buku+agama+islam+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003208.bin
3224761adf4fe96b957907b059f0b46b6f1900bd88b4be1ef369711e87fd9fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3208 7968 bytes

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