Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6da26a7e9f92c75…

MALICIOUS

PDF

42.4 KB Created: 2020-03-07 13:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0b544c2c793ae085effded67938adfe4 SHA-1: 6d200f3ac21d3499ec1d54b2c34b5d5a5b238a3b SHA-256: f6da26a7e9f92c75fec5bc808d2eb03f9d1eea9af08130d2ffa2bd8217d71ada
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 domains, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. The document body contains metadata and a URL, but no explicit instructions or lures. The primary attack pattern appears to be directing users to a large number of external websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://bigdsuperfoods.com/uploads/1/3/0/2/130270936/130270936.html#architecture+portfolio+layout+pinterest
    • http://www.mykaitlynkane.com/uploads/1/3/0/4/130488983/mavaxisoxaduxaj.pdf
    • http://loverbear.com/uploads/1/3/0/6/130604185/4351476.pdf
    • http://temeculavalleyfluteacademy.com/uploads/1/3/0/6/130639327/bobavaled.pdf
    • http://www.mgpsfm.com/uploads/1/3/0/8/130813063/vagikixovebukeje.pdf
    • http://www.banffcanmorejazz.com/uploads/1/3/0/3/130324167/wugaj.pdf
    • http://tomcookephotography.com/uploads/1/3/0/3/130323120/d7aef29df8.pdf
    • http://www.katherinefotos.com/uploads/1/3/0/6/130620848/lomurijuwoz_nupozilusivewe.pdf
    • http://vansrv7.com/uploads/1/3/0/5/130542902/6369920.pdf
    • http://emsbackoffice.com/uploads/1/3/0/3/130323765/zawuruneke.pdf
    • http://legalbalance.co.uk/uploads/1/3/0/7/130776023/noxora.pdf
    • http://www.krgservicecorp.com/uploads/1/3/0/6/130639215/pukoroxozamuwuzunep.pdf
    • http://welcomehometoatmore.com/uploads/1/3/0/5/130590154/1791820d9ae1aab.pdf
    • http://www.kin-onlinepov.com/uploads/1/3/0/5/130588518/2e8cf.pdf
    • http://mindandhomeinsurance.com/uploads/1/3/0/7/130775803/2674696.pdf
    • http://702wafflescafe.com/uploads/1/3/0/3/130313108/08fd1910f67e69.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_off00007c41.bin
9939ba630f4873458e5d8adce914555e4e0d5e2c3a1e8805678b90a0d5f5cb7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C41 8548 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.