Malicious PDF — malware analysis report

Static analysis result for SHA-256 98aecc5b719fa4ef…

MALICIOUS

PDF

224.3 KB Created: 2021-04-21 11:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d1c2e08afede288b111756ada0b0788 SHA-1: a4774355361d5aa9df06f7e30f380fd7ccedcd6e SHA-256: 98aecc5b719fa4ef7785206574f56ce1c1efd4a87ba8029f39038d132aea8137
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely contains malicious content. The presence of embedded URLs, specifically 'https://kuzutuzo.ru/strik?utm_term=netgear+wnr1000v3+access+point+mode', suggests an attempt to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9490

Heuristics 4

  • 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://kuzutuzo.ru/strik?utm_term=netgear+wnr1000v3+access+point+mode
    • https://cdn.sqhk.co/pexejaxer/ZQ7ihbB/58291815094.pdf
    • http://abouts.space/65465609676gnftd.pdf
    • https://cdn.sqhk.co/milevatomog/iRjblja/multiplying_and_dividing_monomials_coloring_worksheet.pdf
    • http://vkysnaya-eda.site/mini_cooper_service_manual_r56rfyww.pdf
    • http://copyrightnotices-form.com/canon_mg6320_inkv0ivi.pdf
    • https://cdn.sqhk.co/gofuzurafano/Xhiifjd/chain_reaction_definition_science.pdf
    • https://cdn.sqhk.co/kixagixupo/ibXicWk/space_agency_2138_game_help.pdf
    • https://cdn.sqhk.co/zadoweferoxe/hihghhI/69528938716.pdf
    • https://cdn.sqhk.co/wofikubid/gHgdsGY/66828675006.pdf
    • https://cdn.sqhk.co/malevevipali/ijgghg6/squid_octopus_and_cuttlefish_are_types_of_what.pdf
    • http://b4shop.icu/wurirukwwzbs.pdf
    • https://cdn.sqhk.co/butiluluvuk/icZBjdD/jeffrey_campbell_widow_platform_boot.pdf
    • http://baffer-shop.space/balochistan_issue_and_its_solutionxjpk6.pdf
    • http://martakkord.ru/ribekegi9pnj2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c11ab09e-384c-4904-8c79-5ef6f38008df.filesusr.com/ugd/7131a6_d4334538f32a457cbd41adacf54423d0.pdf?index=true
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_de6e47abff65496fa1fa166c3de4c82f.pdf?index=true
    • https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_51804b766dab47a5835237a0dd7a3679.pdf?index=true
    • https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_dadc1fe2ca474121a86b48da8eb582c9.pdf?index=true
    • https://13adc596-845f-4f4a-b539-e2c04a0a4b5a.filesusr.com/ugd/6e2da7_7ffc72d405dc484c8959fb4576caa5c1.pdf?index=true
    • https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_7024fda9f19d4c50ba4232365e50e7ca.pdf?index=true
    • https://11fe2947-f393-4df3-905d-f9f3730e834a.filesusr.com/ugd/b1b16e_1d81ac1934ee4a478f9f4528a38844d3.pdf?index=true
    • https://a539eca0-ed6d-4e39-a9fd-63162facd464.filesusr.com/ugd/8170ee_b96de74e2bcd41e6937bc2e74dd69cab.pdf?index=true
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002dd8e.bin
3b693dc0cb13559c1aaaa26f4ce6866841336110051700aadb9a774e43023ea2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD8E 28688 bytes
font_01_sfnt_off000334b4.bin
79af29094c5d6f99efb2a4c2a50116286fec14f648871d713c2442d06403d473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x334B4 5840 bytes
font_02_sfnt_off000348a4.bin
5bb79e5f74d2d859a4ed10f8f7946ee462a452722e6e6dea8861a1620e66a11f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x348A4 11684 bytes

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