Malicious PDF — malware analysis report

Static analysis result for SHA-256 378e230f8de7fd07…

MALICIOUS

PDF

37.4 KB Authoring application: pstoedit
MD5: b66f1c7916a7e108ecc424f9f045621a SHA-1: 3d19548a1d36d4601001e61847bed6a48ae5eb1f SHA-256: 378e230f8de7fd07edf45449f91f319e847e5cc0d68dbf5d106a723178425877
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for a PDF link farm. The document body contains text related to piano notes, but also embeds numerous URLs pointing to other PDF files. These URLs likely serve as a distribution mechanism for further malicious content, potentially leading to phishing or malware downloads. The ClamAV detection name 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://cbbankclassic.com/uploads/1/3/0/2/130271108/gigiro-madanuwe-salowedago.pdf
    • http://tribemotif.com/uploads/1/3/0/6/130639146/4060edb54931.pdf
    • http://psrglobal.net/uploads/1/3/0/5/130542872/sapezer.pdf
    • http://fawo.elnaplaza.ru/uploads/2020/01/28/rizoteronakomoti.pdf
    • http://jobsholic.com/uploads/1/3/0/5/130543169/gaver.pdf
    • http://sweetpeamaternity.ca/uploads/1/3/0/6/130621544/vadevapa_godiz_bosufabadonafi.pdf
    • http://merwininsurance.net/uploads/1/3/0/2/130270790/8784531.pdf
    • http://moonmeart.com/uploads/1/3/0/5/130543310/d618f5cc.pdf
    • http://spinstersguidetodating.com/uploads/1/3/0/6/130603926/fef1bf49.pdf
    • http://mochapter7.com/uploads/1/3/0/3/130313359/3634479.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/4/130436282/130436282.html#hello+adele+piano+notes+for+beginners

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001233.bin
b226249a8d2b0c6c39df4e8f206a8c67669932e9b2244b1ae2d1b6b202f46344		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1233 7960 bytes

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