Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a20c59183eaf038…

MALICIOUS

PDF

45.1 KB Created: 2020-06-03 09:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d171142a889af445bf6296ff6d0da7c7 SHA-1: 7e8518c29d0081b3b6015e15cd431f172fc0a6c8 SHA-256: 5a20c59183eaf03837b64b903aab7583cf8c4cab7b85c62a255560d053139599
170 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains a significant number of external links, identified as a link farm, with the primary host being realfastservices.com. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates that the document contains instructions for executing Windows scripting tools, suggesting a potential payload delivery mechanism. The ClamAV detection 'Pdf.Dropper.Agent-8187747-0' further confirms its malicious nature as a dropper.

Heuristics 6

  • 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.Dropper.Agent-8187747-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8187747-0
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://digitaldocmd.com/uploads/1/3/0/7/130775384/130775384.html#travel+guide+cape+verde
    • http://realfastservices.com/uploads/1/3/0/7/130776889/rawopu_surenopo_zenigipisek_levotibuxa.pdf
    • http://thelpe.com/uploads/1/3/1/4/131484467/873306.pdf
    • http://golddustwomanboutique.com/uploads/1/3/0/4/130490193/2e97422ff800256.pdf
    • http://digitaldocmd.com/uploads/1/3/0/7/130775384/terms.html
    • http://digitaldocmd.com/uploads/1/3/0/7/130775384/dmca.html
    • http://digitaldocmd.com/uploads/1/3/0/7/130775384/policy.html
    • https://bunelajiw.files.wordpress.com/2020/05/bubugenoguledil.pdf
    • https://wiwifidu.files.wordpress.com/2020/05/zolom.pdf
    • https://gurupazesaje.files.wordpress.com/2020/05/75221145829.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_off0000836b.bin
3c70ea8224b33ec01f21d9ea8bc08b73e46383fab3a4510eef808a296fa5e5e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x836B 11432 bytes

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