Malicious PDF — malware analysis report

Static analysis result for SHA-256 f71626f36ced983a…

MALICIOUS

PDF

39.4 KB Authoring application: OpenOffice.org
MD5: 6390952ecc6d453b4b2ac6082303df60 SHA-1: 367db89a767e4a9beba9ebf3ce5d33839ba306b9 SHA-256: f71626f36ced983aa1b2129c17c8c6f3e99bf288f68bec4097157835d0df26b5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO poisoning or phishing. The ClamAV heuristic specifically identifies this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The embedded URLs are the primary indicators of this malicious activity.

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://algaebookandpaper.com/uploads/1/3/0/4/130476700/0470429a6523.pdf
    • http://rozkalnikina.weebly.com/uploads/1/3/0/3/130313106/fe565.pdf
    • http://mirroryourbrilliance.com/uploads/1/3/0/5/130539416/fepuxugitigas.pdf
    • http://panibewar.audiostart27.icu/uploads/2020/01/28/7864163.pdf
    • http://sweetwaternetworks.com/uploads/1/3/0/3/130313022/bowini-mipupoju-mufar.pdf
    • http://octaviusmagazine.com/uploads/1/3/0/5/130539338/dukederipitiziwuxo.pdf
    • http://brettcross.net/uploads/1/3/0/2/130291438/katabuviwizukogupu.pdf
    • http://ketchikanwhales.com/uploads/1/3/0/2/130289554/8317585.pdf
    • http://rpluscreativesmy.com/uploads/1/3/0/2/130273987/bovirul_sigipu.pdf
    • http://theopticalshop.net/uploads/1/3/0/7/130776648/jonibimirowit.pdf
    • http://cfthomas.com/uploads/1/3/0/6/130605490/130605490.html#ielts+papers+with+answers+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001258.bin
24b4c8a2940e5b67850b0b2077fb525c0408e19c4c28cbf3d3eacbba6196a417		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1258 7792 bytes

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