Malicious PDF — malware analysis report

Static analysis result for SHA-256 9892cedc93534925…

MALICIOUS

PDF

33.8 KB Created: 2020-06-16 00:37:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 968a31ab57738af40e16f787c7d0c274 SHA-1: 9aab3d42ce6c8cdf9148490b23e37b281c77b1cf SHA-256: 9892cedc9353492563776eee0fdf8e4fcd568658bf062066d1611fc5c8ad427e
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. The document body also contains a URL, 'http://web4.pleasingfood.com/uploads/1/3/0/7/130740465/130740465.html#como+traduzir+um+arquivo+pdf+inteiro', which appears to be a lure. The primary function seems to be directing users to a large collection of other PDF files hosted on various domains, potentially for SEO spam or to distribute further malicious 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://web4.pleasingfood.com/uploads/1/3/0/7/130740465/130740465.html#como+traduzir+um+arquivo+pdf+inteiro
    • http://towingadr.com/uploads/1/3/0/5/130546294/6387644.pdf
    • http://autodiscover.artpourparties.com/uploads/1/3/0/8/130874563/boralo_tazofomox_gefilonunowe_pezijoxisolugal.pdf
    • http://doxcvitysw.com/uploads/1/3/0/6/130604657/8438154.pdf
    • http://mx.rahood.com/uploads/1/3/1/4/131406263/livejejewapur_nuzofabitov.pdf
    • http://powhatanhousecleaning.com/uploads/1/3/0/5/130550835/8d341a1afe04b7.pdf
    • http://mail.tlhophabdp.org.bw/uploads/1/3/0/2/130289259/lipilowevumenugiw.pdf
    • http://sxmrentalcar.com/uploads/1/3/0/6/130604552/xozeb.pdf
    • http://oldfieldfarmhorseandhome.com/uploads/1/3/0/7/130739280/mimutowoniw-xoxixojitokuda.pdf
    • http://mta-sts.mx.sunnisdelights.com/uploads/1/3/0/7/130738644/4913562.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_off0000558f.bin
ffcc0511efa6a39b55fa78c107c95e8bfbffc800a027d7164a2cfd369fba2c33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x558F 12136 bytes

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