Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fcbb675b1a815c8…

MALICIOUS

PDF

36.9 KB Created: 2020-03-25 07:46:38 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 58c18e42f4b7a0e816deeb3233dd079e SHA-1: e9116ec33d31b87039ebbb2d301cca0ad7e3d34d SHA-256: 8fcbb675b1a815c82ca108f05e1ce2436cdc86c49a67e55cbe3f529920caa026
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on numerous domains, suggesting a link farm or SEO spam campaign. The document body contains garbled text and metadata, but the primary malicious activity appears to be the distribution of these external links. No scripts were extracted, limiting the analysis of direct payload delivery.

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://airpass.cz/uploads/1/3/1/3/131380265/131380265.html#medley+venid+y+adoremos+rojo+acordes
    • http://vickiesworld.com/uploads/1/3/0/6/130621619/roderunu.pdf
    • http://tripletmamas.com/uploads/1/3/0/7/130775014/1813034.pdf
    • http://starquarryfarm.com/uploads/1/3/0/4/130476814/407c7c2c78608.pdf
    • http://frederickandsmith.com/uploads/1/3/0/2/130292104/8311642.pdf
    • http://www.madmugcafe.co.uk/uploads/1/3/0/5/130588956/5346685.pdf
    • http://mail.vetrinaservizi.com/uploads/1/3/0/5/130590355/91a2cbe7.pdf
    • http://pethellas.com/uploads/1/3/0/9/130969162/tubufolelilov_netavegofolo_sizezibosakuda_wagomelome.pdf
    • http://rosepunch.com/uploads/1/3/0/5/130540501/sibosikivetukono.pdf
    • http://www.icandyjewels.shop/uploads/1/3/0/8/130874635/wokepavo-maviz.pdf
    • http://bethevibration.com/uploads/1/3/0/7/130775411/688667.pdf
    • http://www.irtalux.com/uploads/1/3/0/6/130621250/4260282.pdf
    • http://bonpetit.ca/uploads/1/3/0/8/130874470/47325cc747ebb8.pdf
    • http://thehatpursecorporationofamerica.com/uploads/1/3/0/5/130546519/1d1410b14795d1.pdf
    • http://thriftnik.com/uploads/1/3/0/2/130272360/ferumopolupe.pdf
    • http://corbeauseating.com/uploads/1/3/0/5/130550729/9853005.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c7b.bin
b61a641c85613a324675ccaf950145af76521ae6de4823f5442e9ff957c335f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7B 9284 bytes

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