Malicious PDF — malware analysis report

Static analysis result for SHA-256 a797dbffb0da13b9…

MALICIOUS

PDF

93.8 KB Created: 2020-03-31 00:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 46a8fa6b437cc9ff0ec38ead9a68d2ae SHA-1: dc45bbccf051603870d7abdc313d081e8814710e SHA-256: a797dbffb0da13b9e329ba29874193e95d4939ee838fc9cdc64ff0d8266399e8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO spam campaign, designed to artificially inflate search engine rankings or distribute malicious content. The document body contains metadata suggesting it was generated by wkhtmltopdf, and includes a URL that appears to be part of this link farm. No scripts were extracted from this sample, limiting the ability to determine further malicious intent.

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://atasteofjamaicaandmore.com/uploads/1/3/0/7/130740092/130740092.html#city+of+thieves+movie+adaptation
    • http://paistudio.net/uploads/1/3/0/5/130551597/gikanos_fitepezibet_ribalegepa.pdf
    • http://bhbqualityassets.com/uploads/1/3/0/6/130639413/344133.pdf
    • http://petergonzalez.me/uploads/1/3/1/0/131070851/917318.pdf
    • http://jazzheartjazz.com/uploads/1/3/0/3/130313087/97b35371.pdf
    • http://eyliad.com/uploads/1/3/0/7/130776143/be457521d6d.pdf
    • http://hudsongrantslove.com/uploads/1/3/0/7/130776063/8cb97.pdf
    • http://fischerjohnson.com/uploads/1/3/0/7/130739330/xumafo_fewopa_welufukopiwal.pdf
    • http://gbagis.fr/uploads/1/3/0/7/130776716/4249774.pdf
    • http://castroslandscapingma.com/uploads/1/3/0/5/130550711/pewifedev.pdf
    • http://rjsrjschemical.com/uploads/1/3/1/3/131381497/pejeterivo.pdf
    • http://cageclaypool.net/uploads/1/3/0/6/130639765/9677369.pdf
    • http://fitbyalana.com/uploads/1/3/0/3/130379902/nemukozidibebi.pdf
    • http://nevaglobalalliance.com/uploads/1/3/1/3/131382217/feralafakovuji-sonexi-gujofenuseve.pdf
    • http://realcapitalbrokerinvestment.net/uploads/1/3/0/6/130605355/nejodunulejesika.pdf
    • http://www.timarupetresort.com/uploads/1/3/0/6/130604700/deponutevafofaw_goledomirotu_tefarajod_wibodi.pdf
    • http://kirstinmasonrealproperty.com/uploads/1/3/0/5/130541656/4445433.pdf
    • http://singaporepropertynewlaunches.info/uploads/1/3/0/3/130312972/2103346.pdf
    • http://www.formazionemergenza.it/uploads/1/3/0/6/130604169/kakakuwosatulorora.pdf
    • http://twinitron.com/uploads/1/3/0/3/130324315/6e5453b5ae1246.pdf
    • http://drewwieland.com/uploads/1/3/0/3/130379294/1984708.pdf
    • http://betterremindersapp.com/uploads/1/3/0/5/130550785/rafalo.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_off00014a5f.bin
b5a647cf43c357b621efca6b7ab5e99ab3efb4fdc8c259b4266fe7a43a36d54d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A5F 7516 bytes

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