Malicious PDF — malware analysis report

Static analysis result for SHA-256 45fbbaabc9bfc573…

MALICIOUS

PDF

39.0 KB Created: 2020-04-15 13:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b1b0c9dbd492e03f6070c94b248fb22e SHA-1: 922cb9450d647ca9ed1e0052f4cc9de770f31389 SHA-256: 45fbbaabc9bfc573b91d6e011c4241b15f2d595535c951a56e645252875766bf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm or SEO poisoning tactic. The document also explicitly instructs the user to copy and paste content into a shell, a common lure for executing malicious commands. This behavior, combined with the numerous external links, indicates an attempt to redirect the user to malicious content or download a secondary payload.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://shopbelfast.info/uploads/1/3/0/7/130740627/130740627.html#kali+linux+android+hack+apk
    • http://travelstours.org/uploads/1/3/0/9/130970022/475500.pdf
    • http://blindsquirrelcreativedesign.com/uploads/1/3/0/7/130776100/wazobarixulisi_judibajuramuvo_wolade_kozegadek.pdf
    • http://robinsonmsband.com/uploads/1/3/0/7/130775858/a85fc45.pdf
    • http://soberlivingoklahomacity.com/uploads/1/3/0/6/130639683/sofibukofoku.pdf
    • http://darenie.eu/uploads/1/3/1/4/131408788/purisipeponim.pdf
    • http://cron-air.com/uploads/1/3/0/7/130776034/vokugo.pdf
    • http://thanks.republican/uploads/1/3/0/6/130620612/lefifojavazunokulen.pdf
    • http://topofmindgroup.com/uploads/1/3/0/5/130547576/8eee4.pdf
    • http://wallyworldfishing.net/uploads/1/3/1/0/131069838/6d3a0.pdf
    • http://tahiradesigns.com/uploads/1/3/1/4/131407083/1618629.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f5d.bin
fc48b33243ec8a885ab7a8b49bac36e97d8722d1a2a65757ccf92ce0b201e079
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 8072 bytes