Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8d0ec1566f11ca…

MALICIOUS

PDF

49.9 KB Created: 2020-03-25 02:57:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 72189c670bc1bd1b4107080eb3585fd4 SHA-1: 34243fd079bc1a73904c27881f63b3ac28c776f0 SHA-256: ff8d0ec1566f11ca62ec3de9fc6af391ed8a21bce7e883bb70edf7fee06a8f2d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection mechanism. The embedded document body text, though partially corrupted, contains a URL that is also present in the list of extracted URLs. No scripts were extracted from this sample. The primary attack pattern appears to be directing users to a network of external sites.

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.
  • 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://rockandrowel.com/uploads/1/3/0/4/130490115/130490115.html#henri+nouwen+life+of+the+beloved+quotes
    • http://midwestairsoftgroup.net/uploads/1/3/0/3/130313046/vomigatimafekom.pdf
    • http://bswheadworks.com/uploads/1/3/0/2/130291441/8438592.pdf
    • http://advancedsepticfortheworld.com/uploads/1/3/0/6/130604616/tozudigil.pdf
    • http://www.atcostcaskets.com/uploads/1/3/0/5/130539899/jotuxopusut.pdf
    • http://www.managermom.ca/uploads/1/3/0/7/130739595/4e79b4bb69.pdf
    • http://drivingfordyslexia.com/uploads/1/3/0/3/130312912/felufawiv.pdf
    • http://hardstoneconstruction.net/uploads/1/3/0/2/130272511/918884.pdf
    • http://www.cathiejcs.com/uploads/1/3/0/8/130874613/kowubinevud.pdf
    • http://soundstonelaw.ca/uploads/1/3/0/4/130479312/dasadelamo.pdf
    • http://bodyoftheelite.com/uploads/1/3/0/2/130289754/potibarokikob_buzezado_mixogeluz.pdf
    • http://servitusstudios.com/uploads/1/3/0/4/130489522/lazuxolavunugevura.pdf
    • http://partnerfirstfinancial.com/uploads/1/3/0/6/130604756/lotakekewipodu.pdf
    • http://reviewpointservice.com/uploads/1/3/0/5/130550763/3992492.pdf
    • http://solutionslocker.com/uploads/1/3/0/6/130604940/8de507.pdf
    • http://voshaarnooi.co.za/uploads/1/3/0/9/130969456/4311444.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_off00008fd0.bin
db904b838bc715d48eaab5954b6826d8569c56a96b1be56ea35d14f3201bda7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD0 8088 bytes
font_01_sfnt_off0000af45.bin
87fd6b1a35a64f5c2d30902eea89631a9c05d6b36ef70c6d0cee4d2ad867525e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF45 2596 bytes

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