Malicious PDF — malware analysis report

Static analysis result for SHA-256 712d92c206d42eea…

MALICIOUS

PDF

35.0 KB Authoring application: pstoedit
MD5: 3e33a2b506568058ba01927158b58767 SHA-1: 29aa397f68d37c7f39dbf90d103b768bfe36ef44 SHA-256: 712d92c206d42eea511316f9a497b29fe6ec2fea41928530bf205e202112efd8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, suggesting a phishing or SEO abuse campaign. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate the document's primary function is to redirect users to potentially malicious content hosted on numerous domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://alphritasims.com/uploads/1/3/0/4/130478307/watedefilu-ganunig-kogobaje.pdf
    • http://microtiasurgery.net/uploads/1/3/0/5/130590535/bivazami.pdf
    • http://olympicstrackandfield.com/uploads/1/3/0/7/130740084/damigifepusizot_mitunek.pdf
    • http://mymssp.net/uploads/1/3/0/5/130543156/xomaredelogi.pdf
    • http://themoviefangirl.com/uploads/1/3/0/5/130540823/db153.pdf
    • http://quantasona.org/uploads/1/3/0/2/130270901/bavufovovedip.pdf
    • http://thestavergroup.com/uploads/1/3/0/7/130738635/68620029cee04b4.pdf
    • http://keithaxline.com/uploads/1/3/0/6/130639963/9009092.pdf
    • http://hostmaster.awarenessworks.co.uk/uploads/1/3/0/6/130604552/bumelo-nepiforimil-sosafamevubud-pukofunexovin.pdf
    • http://mindexpansionacademy.com/uploads/1/3/0/5/130539370/tajesisebateruwujuro.pdf
    • http://iainvestmentllc.com/uploads/1/3/0/7/130739875/pesizedazu.pdf
    • http://totsaroundtheclock.gammaxiques.org/uploads/1/3/0/5/130589312/130589312.html#ancient+indian+history+rs+sharma

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003160.bin
566740f9dcd434ed0c29c3d4838e4841e7decb8e251292b76576351bb1e14b24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3160 8008 bytes

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