Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8f5d4f0ccc216f…

MALICIOUS

PDF

40.1 KB Authoring application: OpenOffice.org
MD5: a6a1eb9df6c53e03ee726a0366158ad4 SHA-1: 3c55e0e5b4833d21febcd62dad6b1e1a225d1199 SHA-256: 3f8f5d4f0ccc216f31e72db2536fa68a6facef371fefb7e448c74aec49cc7cf2
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing lure. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The embedded URLs, although individually marked as benign, contribute to the overall malicious pattern of link distribution.

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 https://zupaligowilazu.weebly.com/uploads/1/3/0/5/130542924/xojexufaxikedaladew.pdf
    • https://xigunolu.weebly.com/uploads/1/3/0/3/130379294/xomonuri.pdf
    • https://xefepibad.weebly.com/uploads/1/3/0/3/130379237/jamewavukutokazoxak.pdf
    • https://gomafego.weebly.com/uploads/1/3/0/3/130379894/jizekokaxadimena.pdf
    • https://bewowoxifa.weebly.com/uploads/1/3/0/4/130477131/27e72.pdf
    • https://molonunida.weebly.com/uploads/1/3/0/5/130550974/3004872.pdf
    • https://nujesusapojedot.weebly.com/uploads/1/3/0/4/130483879/betejenevu-zexofijewoperaz-zivigeb.pdf
    • https://texujidokurad.weebly.com/uploads/1/3/0/2/130288453/3c3319700.pdf
    • https://kejifowapo.weebly.com/uploads/1/3/0/4/130488288/0a14c1c9a1.pdf
    • https://rafilaluxonijew.weebly.com/uploads/1/3/0/4/130476150/130476150.html#children%27s+tylenol+22+lbs

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000538d.bin
a954f0f4707a7043b63eef75d3c5c66fcd48cda01c81cda12f37a0f4a74e8a31		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x538D 16732 bytes
font_00_sfnt_off000011d4.bin
bd62d232164882f3ba86665dc954e53fce1f86894a10a2d261f242c8f5ab637b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4 8556 bytes

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