Malicious PDF — malware analysis report

Static analysis result for SHA-256 75871ea705da8f96…

MALICIOUS

PDF

33.7 KB Authoring application: PDFBox
MD5: 35dafa4b51638f2409d34eb50b7164fa SHA-1: 705f5e18408836120be4adb69883c2f43c307da6 SHA-256: 75871ea705da8f9620fa514a39d8070bca1849dd4c1fbaeeba9bf9bb56cf69c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a fake invoice lure to entice users to download further malicious content. It contains a large number of external links, many of which are structured as numeric slugs, suggesting a link farm designed to distribute malware. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports its malicious nature.

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://imrsv-x.net/uploads/1/3/0/5/130589171/sojukusidija-fapigowi-kufuw-votawipo.pdf
    • http://www.micropapillarybreastcancer.org/uploads/1/3/0/8/130874220/48b5bcb6.pdf
    • http://mail.fantabular.com/uploads/1/3/0/6/130604956/lasok-sebalifofokekal-zodubixuwuwo-beleni.pdf
    • http://fatfightingmom.com/uploads/1/3/0/8/130814513/nanudubosewor.pdf
    • http://aletothechief.com/uploads/1/3/0/4/130483457/bakemasunekalo.pdf
    • http://archive.tooey.com/uploads/1/3/0/5/130588206/timifidafidod.pdf
    • http://yourplumberguy.com/uploads/1/3/0/4/130483341/16bce69a.pdf
    • http://naturalbeauty.lindseymichalowski.com/uploads/1/3/0/7/130776257/0d8e55d77449b.pdf
    • http://logchurchnewhaven.com/uploads/1/3/0/7/130739099/lopifisizosudu.pdf
    • http://moniqueyin.com/uploads/1/3/0/2/130287898/1391124.pdf
    • http://www.effloraison.fr/uploads/1/3/0/4/130475923/zuroruz.pdf
    • http://nzwildlifeartist.com/uploads/1/3/0/2/130272424/08c5f78aa62.pdf
    • http://nothingtotriflewith.com/uploads/1/3/0/5/130589431/ecf8b0359.pdf
    • http://ryan-mckenzie-se-1.rominastiebenphotography.com/uploads/1/3/0/6/130639409/130639409.html#explain+cash+basis+and+accrual+basis+of+accounting

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c76.bin
0a32a0e78d12dbe19a12c3f54ace9d9c2d55e47a468be0c286908dbdfe4edee9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C76 7096 bytes

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