Malicious PDF — malware analysis report

Static analysis result for SHA-256 309da138588dc784…

MALICIOUS

PDF

37.8 KB Created: 2020-04-09 04:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 41db3515a2fa6ea055b142fd21131cc7 SHA-1: b1ee0af7bccbce3e175f48c65c04137e2f585335 SHA-256: 309da138588dc784c69c21368aea7936828505342991b31563a1ea7bfb2d7091
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior. The document body contains garbled text and a reference to 'wkhtmltopdf', suggesting it was generated programmatically to host these links.

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://mytypenutrition.com/uploads/1/3/0/7/130775980/130775980.html#app+nanda+nic+noc+para+iphone
    • http://drcjward.com/uploads/1/3/0/8/130815664/wixagimi.pdf
    • http://paleocasts.com/uploads/1/3/0/7/130775033/7ca02.pdf
    • http://christiancharlesphotography.com/uploads/1/3/0/5/130589411/mawebesitimi-zagexixoneror-dorowoxine.pdf
    • http://fredstavern.org/uploads/1/3/0/7/130775434/9e95f35e39.pdf
    • http://eastmarionfd.com/uploads/1/3/0/8/130874281/wobawifafiwese_gafomazud_nezurile_fumorufifusawo.pdf
    • http://bandasonora.me/uploads/1/3/0/7/130776516/rewirurek.pdf
    • http://beachtobayprofessionals.com/uploads/1/3/0/8/130874516/3211279.pdf
    • http://nolatamales.net/uploads/1/3/0/6/130604769/lematalinorasoku.pdf
    • http://stylishpartyware.com/uploads/1/3/1/3/131382828/katuvozefipeboze.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_off000069e4.bin
35e63c15604940452ee938ce118d03b2f00e912a4cfd036835021c29465ed37d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E4 8616 bytes

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