Malicious PDF — malware analysis report

Static analysis result for SHA-256 87cd705b8af39f7d…

MALICIOUS

PDF

44.4 KB Created: 2020-03-30 13:36:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 84bf373a54f64a24ea6c48d389f6fb5c SHA-1: 050ccb02a002c590547b77bf9dfe0071512b4b39 SHA-256: 87cd705b8af39f7d2020775f6929e63f8186c38ed339997fa8334667fbe066ad
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links pointing to various domains, a technique often used for SEO link farming or traffic redirection. The document body, though partially corrupted, contains text related to 'English language learning software reviews' and references the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'lmhpcare.com' being a dominant host, strongly suggesting a coordinated effort to drive traffic through these links.

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://shopbelfast.info/uploads/1/3/0/8/130874623/130874623.html#english+language+learning+software+reviews
    • http://lmhpcare.com/uploads/1/3/0/8/130873852/bugusar_xulutaz_donagube.pdf
    • http://thesuzukiacademyatrosehaven.com/uploads/1/3/0/4/130436166/pilesox.pdf
    • http://linwoodpto.com/uploads/1/3/0/8/130874608/b59c737a494956.pdf
    • http://svtcconnect.org/uploads/1/3/0/3/130323596/664107b7.pdf
    • http://getgrowingchicago.com/uploads/1/3/0/5/130551739/6569439.pdf
    • http://cewl-horses.com/uploads/1/3/0/7/130775045/7c5a00ac4ac2a8.pdf
    • http://boomboxdublin.com/uploads/1/3/0/6/130604342/tematepakonipamapuvo.pdf
    • http://onzeroedel.com/uploads/1/3/0/5/130590719/zodakasir-radafobefata-ganizoxomoj-dawuxuv.pdf
    • http://fintech-up.com/uploads/1/3/0/5/130540525/1794927.pdf
    • http://propertyinvestmentworld.org/uploads/1/3/0/4/130436525/vopefarokuwide.pdf
    • http://photosbypri.com/uploads/1/3/0/5/130551739/8224007.pdf
    • http://parlorfloor.com/uploads/1/3/0/8/130814050/tiwareralivez_vubewopet_wuzimoxirego.pdf
    • http://leadsvideofactory.com/uploads/1/3/0/3/130379151/nolopepiwez-kezazepirek-jamusazowaluk.pdf
    • http://celebratehopefoundation.net/uploads/1/3/0/7/130739978/aec7f258.pdf
    • http://breasbowtique.com/uploads/1/3/0/6/130640150/tojareb.pdf
    • http://nanaglensolarfarm.com.au/uploads/1/3/0/5/130544147/jedubesol.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_off000084e4.bin
8d4bae25137d3dc418f77a8e4a3c80b7cba024391be88cf0710ecbb8e7b6a47f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E4 8008 bytes

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