Malicious PDF — malware analysis report

Static analysis result for SHA-256 24598d9ae2a8aced…

MALICIOUS

PDF

70.0 KB Created: 2021-05-11 04:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3e90cd2078f5606b12c7b61b0404939e SHA-1: a61e8da28f49791119a64088646840caa347e69f SHA-256: 24598d9ae2a8aced5d1eb5518f6e0fa2dce9bf9ad2ea1a232846b128c757b4f3
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary focus on 'https://jumiwimov.ru/strik?utm_term=armitron+wr330ft+manual+pdf'. This URL, along with others, suggests a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7937

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
  • 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
  • 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://jumiwimov.ru/strik?utm_term=armitron+wr330ft+manual+pdf PDF link annotation
    • http://jibitivi.66ghz.com/uc_browser_old_version_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/igpEbuz/vonezawuse.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/k2O4Yhb/3128246360.pdfIn PDF document text
    • http://jetavimazi.22web.org/the_7_wonders_of_the_world.pdfIn PDF document text
    • http://zejufixapoferu.iblogger.org/neo_bomberman_para_android_apk_gratis.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/Tjejc1s/cat_voice_sound_audio.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e082b6be-64c0-45f6-a8ff-82b9c6f476f0.filesusr.com/ugd/1479de_e0990f1ea79442c4b66e1fcacd290c04.pdf?index=trueIn PDF document text
    • http://vugovule.epizy.com/reminape.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/18682094147.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/6659229875.pdfIn PDF document text
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_b49778bae8e741bd827e38b31951d0a3.pdf?index=trueIn PDF document text
    • http://gilikasozomexo.epizy.com/atari_st_roms_pack.pdfIn PDF document text
    • http://vokoribosid.rf.gd/how_to_use_cuisinart_convection_bread_maker.pdfIn PDF document text
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_e3fce241b3244a599efb97a1f7130aed.pdf?index=trueIn PDF document text
    • http://buxamojajowolos.rf.gd/solid_liquid_gas_worksheet_5th_grade.pdfIn PDF document text
    • http://xakodalomidu.rf.gd/behance_presentation_templates.pdfIn PDF document text
    • https://c1e70603-6ca1-47bc-880b-b60d7d434995.filesusr.com/ugd/df625d_12f331e3fe314e6db09051294a56aac6.pdf?index=trueIn PDF document text
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_4b595eaf19d54eba93c4116c391bff1b.pdf?index=trueIn PDF document text
    • http://wewapozolebupo.epizy.com/fanezagodek.pdfIn PDF document text
    • http://nurojujejabilu.rf.gd/atoms_form_bonds_with_one_another.pdfIn PDF document text
    • https://327bbe42-9aa5-4ca0-80e5-6c9857058a26.filesusr.com/ugd/2b870b_e0d9b0b412764f988f8881a3ea450a68.pdf?index=trueIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_9cd492b857774fee96b54bab3d3da25b.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 5396 bytes
SHA-256: eb61f919a447e9da55291a4e9247adad91800c5e2328332c87a0cf6b12145c71

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