Malicious PDF — malware analysis report

Static analysis result for SHA-256 de6bf0926a2e5709…

MALICIOUS

PDF

44.3 KB Authoring application: LibreOffice Draw
MD5: 94367b4f934684fbbc922e33ec8f10c0 SHA-1: 54dbc72f4660f58a63584d7875b55e0926c105f5 SHA-256: de6bf0926a2e5709254f382bf0c64e770e7230e57c3de75d27b0e5b1f0195fbe
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, directing users to various websites. The ClamAV heuristic also flags this as phishing-related. The embedded URLs suggest a phishing or malicious redirection campaign, likely aiming to lead users to sites that host further malicious content or scams.

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://webuysinglefamilyhomes.com/uploads/1/3/0/2/130272859/jivosewowu.pdf
    • http://nalirotitu.windows10update.ru/uploads/2020/01/28/5819106.pdf
    • http://fut.rosspsi.ru/uploads/2020/01/28/lelimonomejopo-laxiribekezor-pisimogemifokok.pdf
    • http://sag.vipiski-besplatno9.icu/uploads/2020/01/27/butiluboza.pdf
    • http://lusisa.vipiski-besplatno15.icu/uploads/2020/01/28/tujexoweziboxeno.pdf
    • http://baylandesign.net/uploads/1/3/0/3/130379844/130379844.html#frase+ora%C3%A7%C3%A3o+e+per%C3%ADodo+exerc%C3%ADcios+5+ano

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000119b.bin
df4f4a37920ef39013586bc94449e7128836b83fe391d8606c5773d0cc1839c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119B 10936 bytes
font_01_sfnt_off0000603e.bin
0a19d3ec01c2bd5f2da2e654894ff9caac3df97291af1acb5ff150be3e6b34cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603E 18100 bytes

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