Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1bd35f78a24155…

MALICIOUS

PDF

50.2 KB Created: 2020-04-16 06:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5755303bcdce39a90a9768ee37ce0131 SHA-1: f48561a2fb17bd3e2c7c71b90e3015556a1eb7d7 SHA-256: 4e1bd35f78a2415580884c1970525dab359582fd53c6e3c44dd5371ba22d2bc6
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links to various domains, indicating a link farm or SEO abuse tactic. The heuristic 'PDF_SEO_LINK_FARM' confirms this, identifying 12 external PDF links. The presence of 'SE_LOLBIN_RUN_COMMAND' suggests that the document may contain instructions to execute commands, potentially leveraging the embedded URLs. The primary intent appears to be directing users to a network of seemingly unrelated PDF files hosted on compromised or attacker-controlled domains.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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://berlinsorganicbodybutterandscrubs.com/uploads/1/3/0/6/130621205/130621205.html#imagine+dragons+believer+violin+sheet+music
    • http://ashevillemusicsahavas.com/uploads/1/3/0/8/130813979/pogurepuzem.pdf
    • http://rikkie-no-studio.com/uploads/1/3/0/7/130738949/dagimola.pdf
    • http://axelconcreteinc.com/uploads/1/3/0/3/130323743/f65499f4cb9.pdf
    • http://ketobodyonline.com/uploads/1/3/0/7/130738955/xororuwunave.pdf
    • http://theawkwardeater.net/uploads/1/3/0/5/130539203/b4baa0c7f864.pdf
    • http://foundationbiblechurch.net/uploads/1/3/0/9/130969541/8897902.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_off00009a0a.bin
44d44bbfbdb862abfc9c8d91aab815c1b9777b5bdd49ed6ccb7099b7664d3950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0A 9316 bytes

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