Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e9fe439719b5e4…

MALICIOUS

PDF

80.3 KB Created: 2021-04-08 02:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9f254198b1a4a4afaf358d1f318e3080 SHA-1: b16ddc12c1b35f8f2cfa9fd15dc32954e33cc4e8 SHA-256: b6e9fe439719b5e4b52807ad4b829143b2c9ab4c4a1c4a9e2df331722000131c
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The PDF contains a large number of external links, many of which are likely part of a link farm designed to obscure the primary malicious URL. The primary malicious URL identified is https://botokaw.ru/strik?utm_term=epson+v550+vs+v600+film, which is likely used to redirect users to a phishing or malware download page. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://botokaw.ru/strik?utm_term=epson+v550+vs+v600+film PDF link annotation
    • http://vuwimoxit.mygamesonline.org/11409495341.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://1864c106-1a4f-4194-99fb-dabd5a0af450.filesusr.com/ugd/17b194_6184b87f2f8f4e90a9e6ff334c14e677.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/falcons_injury_report_rotoworld.pdfIn PDF document text
    • http://luwawabegopit.rf.gd/appcelerator_android_sdk_not_found.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/balance_sheet_format_in_excel_2019.pdfIn PDF document text
    • http://rijemow.onlinewebshop.net/dulapuzasidafezetulix.pdfIn PDF document text
    • https://5663e088-3595-439c-971a-5873693bee35.filesusr.com/ugd/e98895_7bce1e654525484cb74ba9ecfa0904d9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/22524572866.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/4529302091.pdfIn PDF document text
    • https://012a8781-80b6-4d33-8f63-56d56ef93f15.filesusr.com/ugd/6d3794_4aa25ed608d845b28fad067b8f3144a0.pdf?index=trueIn PDF document text
    • http://vaxabusegaw.epizy.com/75153534795.pdfIn PDF document text
    • https://b7af6bb9-01eb-4839-ab56-764651de4344.filesusr.com/ugd/2486b5_8f130d6d470048c8849ab591ad769e0b.pdf?index=trueIn PDF document text
    • https://6ce95562-7558-49ee-a7b0-b3003db3b0e9.filesusr.com/ugd/d13e1f_db3690218aea4ffcb388d83f9eef6bc7.pdf?index=trueIn PDF document text
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_4e059a9eefc947a7b43674850bacc19b.pdf?index=trueIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_f12d84b6182143c894c2ef47b76edb59.pdf?index=trueIn PDF document text
    • https://bbaef297-c986-4b42-acb3-0fd65605e280.filesusr.com/ugd/e9fc71_1aab4b1a0f7b4a7eadbd9f11d8a29e36.pdf?index=trueIn PDF document text
    • https://9eff4bf0-55a5-42b9-a65a-250f23c32afd.filesusr.com/ugd/80978b_85998ea2ff8e4fc1b42161f8f460806c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/antinomy_of_common_flowers_ost.pdfIn PDF document text
    • https://8035c368-62b5-4e0f-b07c-73fd2baf85c9.filesusr.com/ugd/2ee8d4_35fa35a1055c4a3d92d70b1da874e5fb.pdf?index=trueIn PDF document text
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_f222643cdeae4cec8fdbe27226ecb292.pdf?index=trueIn PDF document text
    • https://6b52f5a6-db44-4d3e-8337-ab33c729cb13.filesusr.com/ugd/f4de5e_96e12eda17e3409bb68bbaefa344884a.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC91 4768 bytes
SHA-256: 94f309865d95eac4af68ba1c93f0085ca1dbf50adeaea45ede7ee6c9a306d354
font_01_sfnt_off0000fcab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAB 11612 bytes
SHA-256: ac6b277cd0c2d987beb4bb33ca74b26afd36a2bc6d7aaeb2b1e2a242075d507e
font_02_sfnt_off0001242c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1242C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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