Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8c4c79340fdc7e…

MALICIOUS

PDF

45.7 KB Created: 2020-03-22 08:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7d34030975c6e6086e3ddb1c287780d5 SHA-1: 70e72d6b15d3f7f7b58a24b8c9c367b39b584a76 SHA-256: 1f8c4c79340fdc7e9287e33e9ea15b4365cdc2da40dfd16bb18be13b3d753a9b
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, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body text, though partially corrupted, includes the phrase 'Talleres de lectura critica para sexto grado', which appears to be a lure. No scripts were extracted from this sample. The primary attack pattern involves directing users to a multitude of external resources.

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://joshleephotojournalist.org/uploads/1/3/0/7/130775647/130775647.html#talleres+de+lectura+critica+para+sexto+grado
    • http://mymorethan.com/uploads/1/3/0/4/130483480/4290224.pdf
    • http://angelcleaningservice.net/uploads/1/3/0/3/130323235/lamalo_lonaziluril_pejaziz.pdf
    • http://goonmud.net/uploads/1/3/0/2/130272242/wafutifidabowivit.pdf
    • http://michaelsulaim.com/uploads/1/3/0/7/130738822/7245501.pdf
    • http://pointsoffivetarot.com/uploads/1/3/0/2/130271094/8481380.pdf
    • http://nativenerds.org/uploads/1/3/0/5/130539345/385754.pdf
    • http://nashvillerollingpins.com/uploads/1/3/0/5/130545784/godukipa_vetijamuze_nowojevizoguloj_zavojedam.pdf
    • http://craigliddlephotography.com/uploads/1/3/0/4/130435794/nadixufilav-zizekudukaz-neputar-jogef.pdf
    • http://jgtorresenterprises.com/uploads/1/3/0/2/130287538/3398513.pdf
    • http://casashark.com/uploads/1/3/0/7/130775215/1144308.pdf
    • http://remixprojects.com/uploads/1/3/0/5/130541597/lefurewaxodojeg.pdf
    • http://warriordom.net/uploads/1/3/0/5/130543285/xanofavozel_paberanib_ropetedig.pdf
    • http://obieementor.com/uploads/1/3/0/5/130588811/nazelapowa.pdf
    • http://projectrita.com/uploads/1/3/0/3/130379291/6329195.pdf
    • http://nrhcd.org/uploads/1/3/0/7/130740056/nikitozogig-vogovibasomowi-wunupozapukora.pdf
    • http://goldfieldsobstetrics.com/uploads/1/3/0/6/130620930/27cbf3dc62.pdf
    • http://westcoastoralfacialsurgery.com/uploads/1/3/0/6/130621013/0651454.pdf
    • http://jharold.org/uploads/1/3/0/6/130621503/podikazivivedo-gofixitew.pdf
    • http://sunclubworldwide.com/uploads/1/3/0/6/130621120/rikix.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_off00008668.bin
975574185a08ab5106117d0370379df1abec7788d9a3e0181e610f3e5e7b2286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8668 9184 bytes

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