Malicious PDF — malware analysis report

Static analysis result for SHA-256 219a67357968590a…

MALICIOUS

PDF

46.5 KB Authoring application: Serif PagePlus
MD5: f2272e3b7703bb990404914ae5b61b4a SHA-1: 1745effd4bb9da6e84606c8de2d07cde4bb65f0f SHA-256: 219a67357968590a5d1e2c239dd17c631aa0a106bb162a62fb910cad744f432f
150 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 PDF_SEO_LINK_FARM rule, indicating a large number of external links. The ML classifier also assigned a high probability of maliciousness. The embedded URLs point to a network of domains, suggesting a coordinated effort to redirect users. No scripts were extracted, but the structure and heuristics strongly suggest a phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mepalparish.org/uploads/1/3/0/5/130543941/totalufodo_lirusameduluvew.pdf
    • http://nwapetgrooming.com/uploads/1/3/0/4/130478709/6e3c6564.pdf
    • http://javor.decodereadlearn.com/uploads/2020/01/28/pumuzunakarog.pdf
    • http://jakigeorgesculpture.com/uploads/1/3/0/3/130313536/setatewitarori.pdf
    • http://nuohotel-zh.devsite-1.com/uploads/1/3/0/6/130639510/130639510.html#hidrolisis+de+un+disacarido

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010e2.bin
6e3031d5aa6275a96a2fada60edd9016dba5417a7fa4b873dc1728ef3fb76253		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2 9952 bytes
font_01_sfnt_off000064c8.bin
c048ac4ed90d63bfae46472f65f9cf6fc0bd5e75369f2d8f28771a6d96a2731c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C8 3156 bytes
font_02_sfnt_off00006f2f.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2F 16204 bytes

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