Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be1faf4a43c89b1…

MALICIOUS

PDF

39.4 KB Created: 2020-06-25 09:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d8fd01e85e8b0e3626ed8d9ab43afff SHA-1: 987a861d317112f22a7f498337eeba969db04054 SHA-256: 1be1faf4a43c89b1738cef57945666b9460352ca6656db0f34930ef99c7b77fa
102 Risk Score

Malware Insights

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

The PDF document contains numerous external links, characteristic of a SEO link farm or a lure for malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The embedded URLs point to various domains hosting PDF files, suggesting a multi-stage download or redirection process. 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://raybreezeebeats.com/uploads/1/3/0/6/130620449/130620449.html#hores+riding+lessons
    • http://brittso.com/uploads/1/3/0/5/130539428/rabujes-zalotopez.pdf
    • http://leogarzaproperties.com/uploads/1/3/1/3/131384115/jamulezipep.pdf
    • http://cpanel.ottawanavyleague.org/uploads/1/3/0/4/130483513/toreritixupito-mukutanoforike.pdf
    • http://thomasfam.ca/uploads/1/3/0/9/130969910/vumujige.pdf
    • http://cometothewellcoaching.com/uploads/1/3/0/5/130588459/lijegerexogajudiv.pdf
    • http://capitalareaexpo.com/uploads/1/3/0/6/130603979/juxil.pdf
    • http://mx.i90land.com/uploads/1/3/1/3/131382495/5926368.pdf
    • http://mailfilter.sry.com.tw/uploads/1/3/0/5/130551856/sipevivu_niruga_wuxafadaxoli.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005da7.bin
7aa528bbbdf773e637b43e242aefbaaff65be970eb2b017f47a001357992ebc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA7 4452 bytes
font_01_sfnt_off00006cb3.bin
fe464e251c32c59cd77aa562ef6af000bc7e221a70b224a043ac595244d8509d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB3 10704 bytes

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