Malicious PDF — malware analysis report

Static analysis result for SHA-256 f669db15f7e26eaf…

MALICIOUS

PDF

35.8 KB Created: 2020-04-09 20:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 59de7d2a117d4728ddfaea7f201995f6 SHA-1: 1bca6c93d673edc84202dfd76cd3a59bd1b20f57 SHA-256: f669db15f7e26eafa744583223042b6f994d9700574488ae18fcf2ddaabf2e2f
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, many of which point to uniquely named PDF files on various domains. This pattern is indicative of a link farm or SEO poisoning technique, designed to redirect users to potentially malicious content. The primary heuristic firing, PDF_SEO_LINK_FARM, strongly supports this assessment. No scripts were extracted from this sample, limiting the ability to determine the exact payload or further actions.

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://armorgrind.org/uploads/1/3/1/4/131453259/131453259.html#the+view+at+taronga+zoo+menu
    • http://silverbulletgunworks.com/uploads/1/3/0/7/130775539/33bb8afd.pdf
    • http://occupai.org/uploads/1/3/0/4/130435743/femelufonatuzazo.pdf
    • http://laurenbillingsley.com/uploads/1/3/0/2/130291449/zuxipesakujisinaf.pdf
    • http://necoraindustries.com/uploads/1/3/0/7/130739462/ropugenefewibotajaj.pdf
    • http://mandarjoshi.net/uploads/1/3/0/2/130291658/d85684c15.pdf
    • http://eduardoparedescrespo.com/uploads/1/3/0/7/130739578/618fe6600693.pdf
    • http://onceuponalullaby.org/uploads/1/3/0/5/130550696/212801.pdf
    • http://gaymeonhaters.com/uploads/1/3/0/2/130272278/modalawaxuvunofonuxe.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_off000062f4.bin
fc5457d4f7a2b95719d7d570b0b6ecb2e435ad1aa80160703f1a90d0deeeb542		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F4 8368 bytes

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