Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7876fee26a031d8…

MALICIOUS

PDF

38.5 KB Created: 2020-03-29 04:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4c2ac308d2bc6545aa5646a02c30fe32 SHA-1: 3100737ae968a7a043fd87d4ce1026b99b81b539 SHA-256: e7876fee26a031d83e1253e66254911f9b716f35f96054868b2d8eb78136bd5e
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF documents hosted on various domains. This behavior is indicative of a link farm or SEO poisoning tactic, designed to drive traffic or distribute malicious payloads. No scripts were extracted, and the document body is largely unreadable, but the heuristic firings strongly suggest a malicious intent to redirect users to external resources.

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://mta-sts.mail.dickersongreenseminary.org/uploads/1/3/0/4/130476564/130476564.html#etapas+de+la+espermatogenesis+crecimiento
    • http://jlloccupancyplanningclientconsoritum.com/uploads/1/3/0/5/130539022/4794736.pdf
    • http://nikkirelford.com/uploads/1/3/0/5/130539432/jevatutegubivukivib.pdf
    • http://www.technidyneasia.com/uploads/1/3/0/3/130323178/vurixi_mesupaxezege_rires.pdf
    • http://sosthand.com/uploads/1/3/0/4/130483322/zilel.pdf
    • http://rebelbit.com/uploads/1/3/0/4/130483983/tukibudajufutema.pdf
    • http://imagesbyreneephotography.org/uploads/1/3/0/5/130540219/799220a7.pdf
    • http://drsharonsterne.com/uploads/1/3/0/3/130323485/nibogupabuzopox.pdf
    • http://fatfly.co.uk/uploads/1/3/0/6/130639936/9ebf8cb65cb.pdf
    • http://djsilentj.com/uploads/1/3/0/7/130740533/todovigilapu_jovune_vafijazuduxetaj_papun.pdf
    • http://managemystockroom.com/uploads/1/3/0/7/130776134/xugazanokis.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_off00006d89.bin
355b79de491c5c7c176263fbd799e05563d65f6b92b5872177aaac17d545be57
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D89 8244 bytes