Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea61361225a8ffd…

MALICIOUS

PDF

44.2 KB Created: 2020-04-25 19:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7116d2175b4fca1783a62944937c8eea SHA-1: a513a8775b2fa5b81959e4f6539c31a056c6587d SHA-256: 4ea61361225a8ffd3e38e4007cad77cddee7d2e61c28f3a04bbe08bb45fe04eb
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 redirection scheme. The embedded URL 'http://nirvanastorage.net/uploads/1/3/1/3/131383207/131383207.html#chroma+key+app' is also present. The purpose appears to be directing users to potentially malicious or SEO-abused 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://nirvanastorage.net/uploads/1/3/1/3/131383207/131383207.html#chroma+key+app
    • http://ticketmenow.us/uploads/1/3/1/4/131413550/dibed_kumupidanavimu.pdf
    • http://johnjhammer.net/uploads/1/3/1/3/131383733/7dc35f6d7de5e6.pdf
    • http://sarahvieiradesign.com/uploads/1/3/1/4/131437969/medawozejazova.pdf
    • http://yuktaahar.space/uploads/1/3/0/5/130588337/tanogujabetoke.pdf
    • http://coachforachievement.org/uploads/1/3/0/8/130814439/fudokipepin.pdf
    • http://redtailsgroup.com/uploads/1/3/0/6/130604981/580f19093ddd.pdf
    • http://ecoleafdesignstudio.com/uploads/1/3/0/7/130775474/zusudizusajimojaz.pdf
    • http://atyourservicehvac.org/uploads/1/3/0/3/130323106/6af37f8c13.pdf
    • http://eyezbyk.com/uploads/1/3/0/9/130969839/dajule-folugilegi-wetes.pdf
    • http://supernaturaltransformation.org/uploads/1/3/0/6/130604758/kevezaxag-kukarodepoxot-kogimapoperutug.pdf
    • http://jakeoglephotography.com/uploads/1/3/0/7/130740173/06fea55.pdf
    • http://atyourservicehvac.org/uploads/1/3/0/3/130323106/
    • 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_off000084b9.bin
9a70b7921613f82a8bfcd4b0804508285c66617b43f6434fa61c3250bee614ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B9 8380 bytes

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