Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd13b782008f810…

MALICIOUS

PDF

34.1 KB Authoring application: pstoedit
MD5: ff4deaaed67363f711ebd1af6f3811ed SHA-1: 2c3f2be3178122278a828053e86a9b781cd7b5a0 SHA-256: dbd13b782008f810771f9ac289aeacdbf700da490ec70f36f3a37e3d849acab1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, a technique often used for SEO manipulation or to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic generation. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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://nicolejzimmer.com/uploads/1/3/0/6/130620354/robitonitiv-gitux.pdf
    • http://nutmeg-labradoodles.com/uploads/1/3/0/6/130604876/1518004.pdf
    • http://iwonderwouldi.com/uploads/1/3/0/2/130272902/1393549.pdf
    • http://dejiju.serdyukov.pro/uploads/2020/01/28/d1ea6d5a.pdf
    • http://oaklandempowermentscholarshipprogram.com/uploads/1/3/0/6/130639448/1e4acb8c7a.pdf
    • http://thehappygirlstore.com/uploads/1/3/0/3/130313405/130313405.html#basketball+strength+and+conditioning+workout+plan

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034b6.bin
7dbbc7129a5bafa5fd39fd04ea50504dc300739ee8d0e37f2a07ded6ad7440ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34B6 7604 bytes

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