Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4cd696d2773284…

MALICIOUS

PDF

44.6 KB Authoring application: Scribus
MD5: d8ae9df1c6e10e821d23fa0b4e4bd3d2 SHA-1: e52ed12984de640735829342056b7b35294ee380 SHA-256: ed4cd696d2773284675bcabdbad748c98f17e7511a72bfeef53be17ee33713a1
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to distribute malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, despite being heavily obfuscated, contains references to a 'free restaurant flyer template' and includes URLs that likely lead to further malicious content, suggesting a phishing or malware distribution lure.

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://mikaelmonk.com/uploads/1/3/0/6/130620670/jafanitavaxida.pdf
    • http://pxrministries.org/uploads/1/3/0/6/130604287/1e8d2444c08.pdf
    • http://harveyjettmusic.com/uploads/1/3/0/4/130483520/4733057.pdf
    • https://powubijo.weebly.com/uploads/1/3/0/3/130379199/be716fee2bbd6.pdf
    • http://jonuniwila.magiksdur.pw/uploads/2020/01/29/dbc6382fa.pdf
    • http://lillianjue.net/uploads/1/3/0/6/130604248/vukupego.pdf
    • http://nassarinvesting.com/uploads/1/3/0/5/130588846/8866291.pdf
    • https://zoxanimuvujetus.weebly.com/uploads/1/3/0/6/130605222/posaromafidolikuf.pdf
    • http://multistreams.com/uploads/1/3/0/6/130604982/130604982.html#free+restaurant+flyer+template

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011ee.bin
56d06745dac336e4ca765f0a3b662c6cd2bd069a7c15d1d4c90a640eea96d34e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE 9496 bytes
font_01_sfnt_off000073bd.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BD 2616 bytes

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