Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf974930f9bad335…

MALICIOUS

PDF

30.5 KB Authoring application: Karbon
MD5: 27e1184c1d88efb6d2af954ce3a0865d SHA-1: 67e75a723d45a1727fe092a780523fa45618fa31 SHA-256: cf974930f9bad3359cfbf74435ce0cf3bbaa57a4fe582b524a3dae9847da242c
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The presence of numerous embedded URLs, such as http://baker-gp.com/uploads/1/3/0/4/130483394/cc64819a7876.pdf, strongly suggests a phishing or malware distribution campaign. The document body contained heavily obfuscated and unreadable text, providing no further clues to the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://baker-gp.com/uploads/1/3/0/4/130483394/cc64819a7876.pdf
    • http://ashtonharvey.com/uploads/1/3/0/5/130588672/wudana_valolap_xixesopog_nasebogovegat.pdf
    • http://smcolife.com/uploads/1/3/0/5/130551011/7bb8f1d46b58c3.pdf
    • http://myburnsfamily.com/uploads/1/3/0/3/130323298/5152141.pdf
    • http://purebarretexasstrong.com/uploads/1/3/0/6/130604618/bakeje.pdf
    • http://cookielovecustomsugarcookies.com/uploads/1/3/0/5/130541272/9759189.pdf
    • http://californiaconnecting.org/uploads/1/3/0/7/130776676/1153204.pdf
    • http://cetlgroup.org/uploads/1/3/0/5/130546759/xuwuvaxe_keguwaxu_roner_galati.pdf
    • http://myvegandish.com/uploads/1/3/0/4/130483349/satowokotep.pdf
    • http://lectricwind.com/uploads/1/3/0/6/130604147/8997932.pdf
    • http://tasktwins.net/uploads/1/3/0/2/130287533/naparujojexulan.pdf
    • http://jeffersonianconservatism.com/uploads/1/3/0/4/130476135/jiboriloxududa.pdf
    • http://hotelvic-phase2-ja.devsite-1.com/uploads/1/3/0/2/130288707/130288707.html#apache+camel+sqlite

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001d93.bin
39f42d6d865426dbec5819a1c91e46840a297fb356dc3c083ac48335419391cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D93 8276 bytes

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