Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e369bfe8278f2a…

MALICIOUS

PDF

98.2 KB Created: 2021-05-11 04:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: aad085c4e77e7007805b23b653449d1c SHA-1: db4835b91ba582f9ca7620e71adfdaecbe634177 SHA-256: 62e369bfe8278f2a27e8ec6337f0271608cc61c34d3bbcc3649bf3d74c598e5e
126 Risk Score

Malware Insights

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

The PDF contains numerous links to disposable domains, with one specific URL being highlighted in the document body and heuristics. This URL, 'https://bologen.ru/strik?utm_term=whirlpool+washing+machine+repair+centre+near+me', is likely part of a phishing or scam campaign designed to redirect users to malicious content. The presence of multiple link farms and the ML classifier's high confidence score further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/strik?utm_term=whirlpool+washing+machine+repair+centre+near+me PDF link annotation
    • http://fadewujetenuve.mywebcommunity.org/51123993806.pdfIn PDF document text
    • http://kebuwakuje.medianewsonline.com/vuvoniwam.pdfIn PDF document text
    • http://copyrightproblem.com/fogezokupakegikajav7nird.pdfIn PDF document text
    • http://spoonnumberone.xyz/lorasavajuditasibumusuvw0mv5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_600b66aa8ee6e.pdfIn PDF document text
    • http://losusosemusisi.iblogger.org/wikorabikuk.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/zoom_handy_recorder_h2nprjdp.pdfIn PDF document text
    • http://sojekobab.22web.org/39429536416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470401/normal_60250c54a757c.pdfIn PDF document text
    • http://wijulewotolag.22web.org/53632448710.pdfIn PDF document text
    • http://buwovavozu.getenjoyment.net/baseline_concussion_test.pdfIn PDF document text
    • http://cleaner360.shop/sikiru_barrister_music4zjj3.pdfIn PDF document text
    • http://baderezu.scienceontheweb.net/ielts_writing_task_answer_sheet.pdfIn PDF document text
    • http://revujutipisan.22web.org/wisumuwaze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404528/normal_606387dbe40b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_5ff8c54b1e995.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/63260566889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481068/normal_606187fd4c7e5.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://s3.amazonaws.com/kovilowab/how_does_erosion_affect_the_coastline.pdfIn PDF document text
    • http://xesupunugotim.rf.gd/96778566482.pdfIn PDF document text
    • http://tinipemalab.rf.gd/ralipunefutefilotonevibe.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/2012_ski_doo_service_manual_free_download.pdfIn PDF document text
    • http://ratofozobafizok.epizy.com/casio_g-shock_ga-100-1a2er_review.pdfIn PDF document text
    • http://japixunatavaxi.rf.gd/rain_dial_plus_manual_run.pdfIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13491 5240 bytes
SHA-256: 139ecee353292b94b7f49f20cd435b655e8e37a5bb28f5df309ed37654343f39
font_01_sfnt_off0001463b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1463B 11120 bytes
SHA-256: 911a9a414c6c4d4eebccb8e02ad0dba8acc7a4499b1b6d509ad451e8a663cb4d
font_02_sfnt_off00016c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C38 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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