Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca05bdcb9f35300…

MALICIOUS

PDF

39.6 KB Authoring application: Karbon
MD5: 917ad1ed534142a4967bc8d34501e5b6 SHA-1: 317137d198074d8c0a4f62b09a8e5d2087b86960 SHA-256: 7ca05bdcb9f353006d984dca26b7267740cb82c8647eded08a4f943def4d595d
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a 'PDF_SEO_LINK_FARM', indicating a large number of embedded external links. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The embedded URLs are likely used to redirect users to phishing sites or download further malicious content. The document body contains garbled text, suggesting it is not intended for human consumption but rather as a container for the malicious links.

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://visionaryhealthcare.com.au/uploads/1/3/0/4/130436054/bisipiveno.pdf
    • http://mosquee-alforqane-lille.com/uploads/1/3/0/4/130435602/komilapexelanar.pdf
    • http://rant-therapy.com/uploads/1/3/0/4/130483307/83fd2f135c.pdf
    • http://legendcavehouse.com/uploads/1/3/0/7/130775062/jagovoba.pdf
    • http://7daysdietplan.net/uploads/1/3/0/4/130489128/c527eb82cd94c5.pdf
    • http://moosemanormi.com/uploads/1/3/0/6/130620450/noxabarasu-zifimefami-bawowoxotadaxoj-melof.pdf
    • http://jakejelicich.com/uploads/1/3/0/4/130483346/2667015.pdf
    • http://mjclifestyle.com/uploads/1/3/0/5/130545189/035241ed5.pdf
    • http://redim.store/uploads/1/3/0/7/130775372/469215.pdf
    • http://mountaincreekhotels.com/uploads/1/3/0/5/130543106/wosowamojuwu-dukonesopudoza-lidatom-zuxazosebo.pdf
    • http://betaqua.com/uploads/1/3/0/6/130639855/barajofoluxosi-noxabetubokem-taxobe-puboxaxiwavum.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/4/130488816/130488816.html#actin+and+myosin+thick+and+thin+filaments

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003535.bin
06d4a1cc3182b111ec1e99cd695f72b31e4cb0533789c45dee4a9687bb05630e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3535 3176 bytes
font_01_sfnt_off000042a4.bin
80f4aa6f361c2a5527724c74249e47e2af67cd546a4681612f77aeaebea8fb9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42A4 8440 bytes

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