Malicious PDF — malware analysis report

Static analysis result for SHA-256 1652bdd326857634…

MALICIOUS

PDF

77.4 KB Created: 2021-04-30 08:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5832ea5c276b2d4781e69b74b8cf60ca SHA-1: 7d09e636a6013b71d3f2b6439421303b3cf9e635 SHA-256: 1652bdd32685763452604d2c81ad9e51b220ae004e7721e3dbf235050c2fa292
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a PDF link farm, suggesting a malicious intent to redirect users. The ML classifier and ClamAV detection strongly indicate maliciousness, with a high probability of phishing or malware distribution. No scripts were extracted, but the presence of numerous external URIs points towards an attack pattern focused on luring users to potentially compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://nipisod.ru/strik?utm_term=how+to+treat+cystic+pimple+naturally
    • http://pobesegu.scienceontheweb.net/alfred_adler_livros.pdf
    • http://vofufime.mypressonline.com/30742821189.pdf
    • http://xazupadapafow.mypressonline.com/jolly_phonics_book_5.pdf
    • https://nibovipuduri.weebly.com/uploads/1/3/0/8/130814681/7881037.pdf
    • https://jaxevilin.weebly.com/uploads/1/3/1/6/131606955/720e69c.pdf
    • http://kulupitodawiri.iblogger.org/82626624954.pdf
    • https://kuwewukes.weebly.com/uploads/1/3/1/6/131636575/rujanetorabeva_dexuxik_fujejerofif_podiw.pdf
    • http://meetporte.xyz/dark_souls_3_builds_dexq4l2y.pdf
    • http://j3vnci4.xyz/how_to_make_a_rounded_corner_triangle_in_photoshopdmf87.pdf
    • http://daating19.site/xupuperexajewesazomd29p4.pdf
    • http://naturfresh.space/48940807557dumzv.pdf
    • http://nulatapukedu.scienceontheweb.net/bsc_academy_current_affairs.pdf
    • https://vameduxa.weebly.com/uploads/1/3/4/6/134664578/ab3c2ea.pdf
    • https://daluruxixofofi.weebly.com/uploads/1/3/1/3/131398394/bunebu.pdf
    • http://bumawusuka.mypressonline.com/bawajibisewulavumeb.pdf
    • http://complect-tech.ru/nukopetamejemipamobigexipynn.pdf
    • http://lolabarafusiru.iblogger.org/police_bharti_form_2019_hp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cc813541-98b8-4f13-9b56-f2455131e126/tegunosuzilaxif.pdf
    • https://uploads.strikinglycdn.com/files/34aea377-435b-42a1-b7dc-fff5f0c99897/menahan_street_band_make_the_road_by_walking_vinyl.pdf
    • https://uploads.strikinglycdn.com/files/49988fa2-cc3e-4e54-af79-a763298ce429/fixodidamosegivu.pdf
    • http://vanepozimor.rf.gd/free_powerpoint_templates_business_proposal.pdf
    • http://golofup.rf.gd/nisijusapekamapubugo.pdf
    • https://uploads.strikinglycdn.com/files/0959b3b7-5fcd-45d2-8d90-9bf0dcaab167/rexetetalobufolaku.pdf
    • https://uploads.strikinglycdn.com/files/5419b484-85bd-4857-b7b4-a8ef49734f82/jowipa.pdf
    • https://uploads.strikinglycdn.com/files/35ae87fc-1ecb-45e1-a87d-a18d2d9dd325/dodavuxusiwuvewerek.pdf
    • https://uploads.strikinglycdn.com/files/ad956049-be82-4340-b4d8-c3e260484a86/4586442048.pdf
    • https://uploads.strikinglycdn.com/files/06b7f45c-4545-4e41-b644-c63cec26b886/how_much_is_medical_laboratory_technology_salary.pdf
    • https://uploads.strikinglycdn.com/files/d7633a57-c48b-468b-9a1f-5b39d22c020f/robowadex.pdf
    • https://uploads.strikinglycdn.com/files/da4cacb1-1e88-4738-8942-6e8735696124/how_to_program_ge_universal_remote_to_westinghouse_tv.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f01c.bin
fd06cb31927b770b9fba00806fab23fa07b531b8acb9af8366ec5bc682c8895c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF01C 5232 bytes
font_01_sfnt_off000101e9.bin
3ea4de3e59e2c3225c4bac29d9942b1bcc701863bb5ba73db1f0e1b18448bca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101E9 10520 bytes

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