Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32ab319356541f9…

MALICIOUS

PDF

31.6 KB Authoring application: PDFedit
MD5: 1f2f4c448de218d9c1b20e2d138cc12f SHA-1: 837721792f68099f57446e378545f9ac0f321262 SHA-256: b32ab319356541f979a49aa098eccea2ae88c1e0b66546907d68c805311f3007
170 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or malware distribution lure, as indicated by the critical ClamAV detection and ML classifier flagging. The PDF contains a large number of embedded links pointing to external PDF files hosted on various domains, a technique often used to obscure malicious intent or distribute further payloads. One of the embedded URLs, http://95.217.124.67:80/uploads/2020/01/27/xogifuda.pdf, directly uses an IP address, which is a strong indicator of malicious activity. The document body, though heavily obfuscated, contains these same URLs, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://caninecompanionkollege.com/uploads/1/3/0/2/130289279/dewizetokomil_tavugatovo_ziwam.pdf
    • http://sharingthestory.org/uploads/1/3/0/6/130604632/9967958.pdf
    • http://gwe-design.com/uploads/1/3/0/4/130479171/9489159.pdf
    • http://porscheaphotography.com/uploads/1/3/0/6/130604630/gilupuvodepideliwup.pdf
    • http://mengtaosun.com/uploads/1/3/0/6/130604700/7457c.pdf
    • http://yogaindradevi.com/uploads/1/3/0/5/130588513/e94139953109.pdf
    • http://95.217.124.67:80/uploads/2020/01/27/xogifuda.pdf
    • http://sturminsternewtonplan.com/uploads/1/3/0/2/130289623/ddbde42f9.pdf
    • http://efcoform.com/uploads/1/3/0/5/130539247/a9253d14c22.pdf
    • https://tigawidaronunu.weebly.com/uploads/1/3/0/4/130435577/6557147.pdf
    • https://baxodexuw.weebly.com/uploads/1/3/0/3/130313098/movabezuron.pdf
    • http://adarabilgisayar.net/uploads/2020/01/27/nofam.pdf
    • https://vesabupiwufaxi.weebly.com/uploads/1/3/0/5/130551055/d5cf16.pdf
    • http://nordcel.com/uploads/1/3/0/6/130621096/ninijagora.pdf
    • http://paintballcrash.ru/uploads/2020/01/27/zizupe.pdf
    • http://alebalieiro.cl/uploads/1/3/0/5/130551920/metufejebevul-levusuzi-bununelal.pdf
    • http://delectableeatsandtreats.com/uploads/1/3/0/5/130588703/fanik.pdf
    • http://rehphotography.org/uploads/1/3/0/5/130540021/130540021.html#degrees+of+comparison+worksheets+for+kindergarten

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001419.bin
069348064b139eb24f32978b341195d844e2947889bbddaea1aef2534124bc5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1419 6948 bytes

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