Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a261c18529c109…

MALICIOUS

PDF

37.0 KB Created: 2020-04-06 13:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 835083085cab096108134be934a2b71f SHA-1: cd4270a61950c372550f669c2bab7217e1aab257 SHA-256: 65a261c18529c109d867b158c1acf27fa9c94755d8ebbd918075ba42934c1171
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains. This suggests a link farm or SEO manipulation tactic, potentially to distribute malicious content or improve search rankings for attacker-controlled sites. The ML classifier also strongly indicated maliciousness.

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://kindredspiritsofboca.com/uploads/1/3/0/2/130272295/130272295.html#how+to+clean+maytag+centennial+commercial+technology+washer
    • http://rhysreedjohnson.com/uploads/1/3/0/6/130639787/xijifenofivilo.pdf
    • http://senslearn.com/uploads/1/3/0/3/130313466/wilubukemiw.pdf
    • http://ythinkgh.com/uploads/1/3/0/7/130739829/jubulowud_jesup.pdf
    • http://empreintebible.com/uploads/1/3/0/5/130590714/fc131d.pdf
    • http://joetsc.com/uploads/1/3/0/7/130776267/suvinilodatek-tapoginirav.pdf
    • http://thehitsvillesoulsisters.com/uploads/1/3/0/2/130272071/jogimojoso-tawisugonawevo-fiwol-toxozu.pdf
    • http://beyondhillco.com/uploads/1/3/0/6/130604397/xazatejudixawuzawu.pdf
    • http://baliliveentertainment.com/uploads/1/3/1/0/131069874/guneg_vokowutomaf_mazop_subusezejobuxe.pdf
    • http://zentensitycoaching.com/uploads/1/3/1/3/131381658/tedaxelanasofufororo.pdf
    • http://qoamonline.com/uploads/1/3/0/2/130287727/2704bdca.pdf
    • http://carpetcleaningservicesla.com/uploads/1/3/0/5/130588729/466fce5c435e4.pdf
    • http://compassionchurch.com/uploads/1/3/0/7/130740440/b300677346ce.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_off000067d8.bin
f70a246453369149903f5c7d8e0578eb1e7e62231d97bd8c49b2e175a76afbe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D8 7944 bytes

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