Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e4143fa65cd0ea…

MALICIOUS

PDF

33.0 KB Authoring application: Karbon
MD5: c4190c1c7c284dae6b1825fdbbd3cfbd SHA-1: 189cc69a8c872b91a5c740d148be7d901653ce8f SHA-256: 82e4143fa65cd0eafc43927b8ed7b0ffdcfc9a0505f4e9ef57b9ec754b5cbc8b
140 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags this as Pdf.Phishing.TtraffRobotInstall. The document body contains a mix of seemingly legitimate text about Azure cloud icons and a large number of URLs, suggesting a phishing or SEO manipulation attempt. No scripts were extracted from this sample.

Heuristics 4

  • 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
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://durhamyouthprograms.org/uploads/1/3/0/4/130478520/kutub.pdf
    • http://homoses.ru/uploads/2020/01/29/7191060.pdf
    • http://cyclebavaria.com/uploads/1/3/0/6/130620769/pivosa_pibepovebitojim_nadewidube_sudofamubedu.pdf
    • http://donttakemysunshine.com/uploads/1/3/0/2/130287311/dapitifexi_mitesobaju_getobi.pdf
    • http://scope-for-growth.com/uploads/1/3/0/5/130543653/7580911.pdf
    • http://jobax.z-kiski.fun/uploads/2020/01/28/1727014.pdf
    • http://marleyandcophotography.com/uploads/1/3/0/6/130603825/6770560.pdf
    • http://mmshop.club/uploads/1/3/0/6/130620537/rizuzezu.pdf
    • http://oftsinwiltit.pro/uploads/2020/01/27/vinepa_vetus_gixexob_pemomozimujux.pdf
    • http://carmentomassetti.com/uploads/1/3/0/5/130550787/5b5e4e01.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/6/130604525/130604525.html#azure+cloud+icons

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001252.bin
d6310412831795982d5e72438522d159a626da015adf3462faca352c9583b9b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1252 7764 bytes

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