Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a9c922ab3c21d5…

MALICIOUS

PDF

38.6 KB Created: 2020-06-22 18:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fbcd611e0f7a37f88808d64395b6515 SHA-1: 41406ae04ef6330cc4f81f55e6ea356e8a0db88a SHA-256: 29a9c922ab3c21d5b256134c76182280af5c0700de8e37268e655dc98e3fe610
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to medical diagnosis and treatment, suggesting a lure to entice users to click the malicious links. No scripts were extracted, and the primary malicious activity appears to be the distribution of numerous links to potentially harmful content.

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://elementztheshow.com/uploads/1/3/1/4/131437446/131437446.html#current+medical+diagnosis+and+treatment+2013+pdf
    • http://alshayarecruitmentoffice.com/uploads/1/3/1/6/131637889/bebeb-sokodipudisen-tozuj.pdf
    • http://hostmaster.goinganywherenice.com/uploads/1/3/1/0/131070625/1785954.pdf
    • http://highdesertranchwife.com/uploads/1/3/1/6/131606597/lamon_komizo.pdf
    • http://foodprintscatering.com/uploads/1/3/0/9/130969680/6403563.pdf
    • http://ravellence.com/uploads/1/3/1/4/131453182/jitulu.pdf
    • http://pandeliventures.com/uploads/1/3/0/9/130969751/zogofapeduxovuk.pdf
    • http://firsthandsuccess.com/uploads/1/3/0/6/130604748/c4b71d54b41.pdf
    • http://vuwwib.com/uploads/1/3/1/8/131856903/bepetanom.pdf
    • http://lamarato.com/uploads/1/3/0/6/130604896/gunurolarivow.pdf
    • http://rachelcooksketo.com/uploads/1/3/0/6/130639764/d5cd86d2.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_off00005411.bin
bcfa41cbeab27f0a7d6a28f65efbe77860df502cbce47975b577ead4afee1d25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5411 5868 bytes
font_01_sfnt_off000067ed.bin
669078f8afdc60f43a0bd05ad7c2f866ce904df2c92018b790e0bac24ac8d032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67ED 10760 bytes

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