Malicious PDF — malware analysis report

Static analysis result for SHA-256 952334cdf07d506e…

MALICIOUS

PDF

76.3 KB Created: 2021-04-07 22:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dd2f4857ef2d4699c9b007dd50b9dce SHA-1: be717cc2688cd2bfaf4e0efeb8a6389fa50802cf SHA-256: 952334cdf07d506e13249d6b26ea9a6f79a0d0f7f94cb90ab804c7a1f827fb02
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution attempt. The document contains a large number of external links, forming a link farm, with one prominent URL pointing to 'zajinet.ru' which is likely part of the malicious infrastructure. The PDF's structure and the presence of numerous links suggest an attempt to obfuscate the true malicious intent and distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://zajinet.ru/strik?utm_term=a+doll%2527s+house+movie+download
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/1c5c21a2b909c.pdf
    • https://guvepilafofifiv.weebly.com/uploads/1/3/4/6/134682232/pakalawaw.pdf
    • https://povefedonigo.weebly.com/uploads/1/3/1/6/131637150/218948.pdf
    • https://gugibutuxu.weebly.com/uploads/1/3/2/8/132814167/3136940.pdf
    • http://konanozopesan.22web.org/futosobo.pdf
    • https://leloturopuroka.weebly.com/uploads/1/3/5/9/135956930/mixajigamekapa-mewidewojuxupuf.pdf
    • https://xefezabegeritaj.weebly.com/uploads/1/3/1/3/131379478/5b4c6363fa3.pdf
    • https://xodukibefapox.weebly.com/uploads/1/3/0/8/130873769/witoruzilogo_pipesakisaluba_mutufirajovu_vetilelab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nosepevozux/lobivudidu.pdf
    • https://uploads.strikinglycdn.com/files/6d49228e-2413-4547-8a94-e861245a9e6f/how_to_adjust_a_centerpoint_scope.pdf
    • http://sapumazolexu.epizy.com/deloitte_consulting_resume_template.pdf
    • https://uploads.strikinglycdn.com/files/fbc29eb8-3ab9-405c-b6c5-3fc3ed8dcc4a/80526322672.pdf
    • https://uploads.strikinglycdn.com/files/b7e5c2df-8dae-4c0f-a704-3a8f38b4072c/pigekage.pdf
    • https://s3.amazonaws.com/nisoxow/batch_programming_if_statement.pdf
    • https://uploads.strikinglycdn.com/files/324b8f9a-8d90-4771-a2e1-b2697087192e/peavey_bandit_112_transtube_silver_stripe.pdf
    • https://uploads.strikinglycdn.com/files/3e173ca7-c752-496b-acc4-9111f63584e8/irregular_verbs_complete_list_spanish_translation.pdf
    • https://uploads.strikinglycdn.com/files/6a95749f-e9fc-4b14-be7c-bbbc3956070d/garmin_delta_sport_xc_collar_charger.pdf
    • https://s3.amazonaws.com/makumapikeze/nutrition_information_milky_way_fun_size.pdf
    • https://uploads.strikinglycdn.com/files/57f3b132-7567-4662-9806-c46bf310aca8/jupyter_notebook_markdown_shortcut.pdf
    • https://s3.amazonaws.com/xaliwalufoguni/46796872019.pdf
    • https://uploads.strikinglycdn.com/files/bb759189-34c9-4e18-8a8a-fd6cc9b79515/mejasodofu.pdf
    • https://uploads.strikinglycdn.com/files/1f36483f-c628-49b7-baa2-852d96322336/6921107713.pdf
    • http://fefugadabojenip.epizy.com/year_3_telling_time_worksheets.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d69b.bin
aad9840954f33440abe7745707bb86c76057c2662daf4afc03613bef498ee9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD69B 5144 bytes
font_01_sfnt_off0000e80d.bin
140c85395523a447e0409d32457a89abefa2f8d596a8f27e9fecacb8046ca80a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE80D 10724 bytes
font_02_sfnt_off00010cad.bin
201044b806add57bd25b43d6e3b5c05de4f9d5f5a1bc981858fd438a93e762f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAD 16164 bytes

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