Malicious PDF — malware analysis report

Static analysis result for SHA-256 217a030388497b95…

MALICIOUS

PDF

37.6 KB Authoring application: Inkscape
MD5: 409c27c3045f4277b203b90e5eb30d01 SHA-1: 4d498c1ffbf10c083bc2452789d53d2d3c1bc397 SHA-256: 217a030388497b95664ad9ac2d358436dc1aeba0225cf7a77c0bef25a54c4934
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique commonly used in phishing campaigns to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing classification. The document body, while containing educational terms, also includes obfuscated text and the same URLs found in the heuristics, indicating a deliberate attempt to redirect users to potentially harmful sites.

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://vol.owenwilson.ru/uploads/2020/01/28/tifeti.pdf
    • http://wuxuekx.com/uploads/2020/01/28/wovisaxizi-rebarup.pdf
    • http://messydesk.org/uploads/1/3/0/7/130739024/02e1bb14540cb.pdf
    • http://ukm-hq.com/uploads/1/3/0/5/130543156/betenapoxawovej.pdf
    • http://cluedetectivepuzzleagency.club/uploads/1/3/0/7/130740011/9a9d9.pdf
    • http://gymdominator.com/uploads/1/3/0/5/130539097/gusitarasolofutewexu.pdf
    • http://stellarvoice.org/uploads/1/3/0/5/130550926/130550926.html#first+day+of+school+worksheets+third+grade

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001107.bin
33f4000034b955d7fbe8e9df48d0f11be500a9dc12ec20d77055ac776a7bd7e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1107 8224 bytes

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