Malicious PDF — malware analysis report

Static analysis result for SHA-256 38d4a4d24c35741d…

MALICIOUS

PDF

49.8 KB Authoring application: Pdftk
MD5: edd1f93525f1cc667d087fa3a6c5ae2c SHA-1: 784620ddba1bb95171cc9422c72ff7797bae23d6 SHA-256: 38d4a4d24c35741d80174e1854f186c1ac01d2305d5c17eb888200c4de990d0f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified as a link farm, and includes a visual call-to-action. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing or malware distribution intent. The embedded URLs are likely used to redirect the user to malicious content or further stages of an attack.

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://daniel-alexandru-beres.com/uploads/1/3/0/6/130621794/034adaa59dfffd0.pdf
    • http://nadiaberyl.fr/uploads/1/3/0/5/130551387/8894750.pdf
    • http://stm233.com/uploads/1/3/0/4/130483194/ruxonado.pdf
    • http://digital-car.ru:80/uploads/2020/01/29/tifesiruxugowi.pdf
    • https://kozorone.weebly.com/uploads/1/3/0/4/130483300/4769355.pdf
    • http://angelajobin.com/uploads/1/3/0/5/130589159/saxedoxowezin-majemamasi-majufureg.pdf
    • http://millsupportzuid.com/uploads/1/3/0/6/130640146/210807.pdf
    • http://mypartymalta.com/uploads/1/3/0/5/130590356/4510601.pdf
    • http://nottinghamkickboxing.com/uploads/1/3/0/6/130639448/puvimofalakuj.pdf
    • http://thebacqroom.com/uploads/1/3/0/5/130540359/dogamojujunaxuruf.pdf
    • http://citizensfirstfinancialgroup.com/uploads/1/3/0/6/130604602/gazexuzek.pdf
    • http://myhouseofjeans.com/uploads/1/3/0/7/130739034/130739034.html#adobe+flash+player+activex+10

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000062bc.bin
98609cc82109355798a55ba2ad3e3e7ec2f3262e03c46457c782a8c4103f615d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x62BC 15192 bytes
font_00_sfnt_off000014fb.bin
e88007a3102d357bcdb68f4a9d85bc0549b53dc02039e69961d914372a558120		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14FB 10892 bytes

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