Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c4180ed0638e95…

MALICIOUS

PDF

77.8 KB Created: 2021-03-20 01:50:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 146a3cf74b821cfe07e2f8f3b01036a9 SHA-1: 6e8737e7babd097bb2868cd65e43b377a83dbe86 SHA-256: c5c4180ed0638e955339485f6c04c371417227d58309786684b6ae9f7b1fc680
136 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be instructing the user to open a password-protected archive, a common tactic to bypass security scanners. ClamAV detection further confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://xajibur.ru/wix?keyword=how+to+become+playful+sims+4+cheat
    • http://health-top.ru/fundamentals_of_building_construction_5th_edition_ebookty2us.pdf
    • http://design-kvartira.info/ap_research_presentation_rubric_2020rkgdq.pdf
    • http://shop50off.info/giganurovor4kpev.pdf
    • http://rexonina.medianewsonline.com/betwixt_and_between_albert_camus.pdf
    • http://repair-planshetov.ru/ludepefutelumijelinewqzunp.pdf
    • http://itdiscount.info/hindi_english_bilingual_visual_dictionarycukpk.pdf
    • http://nifimoperokoj.medianewsonline.com/jetugat.pdf
    • http://newser.site/seaga_vending_machine_reviewsbxpjy.pdf
    • http://servempieza.site/snes_emulator_macspzve.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b22272e0-ec35-4b31-8108-18d82f1bb722/is_it_common_for_couples_to_argue.pdf
    • https://uploads.strikinglycdn.com/files/91495695-eb50-4bc8-b6dc-ec6bd5182bc3/bookshelf_ideas_for_home.pdf
    • https://s3.amazonaws.com/bugutaj/zowineveg.pdf
    • https://s3.amazonaws.com/viboxikuz/ballade_pour_adeline_tabs.pdf
    • https://uploads.strikinglycdn.com/files/2bf55f6d-f03a-47f9-a32a-41d50215a5db/nisebevineg.pdf
    • https://uploads.strikinglycdn.com/files/89cfddaa-a0dc-4573-a5ae-3f399c9ec395/giroxeneku.pdf
    • https://uploads.strikinglycdn.com/files/e18876b7-aa4a-4ec5-a1d5-bd0ed495989c/95602810899.pdf
    • https://uploads.strikinglycdn.com/files/5710cf32-d5b8-4a15-8b0c-5dea27d7febf/flaxseed_meal_recipes_for_breakfast.pdf
    • https://uploads.strikinglycdn.com/files/6a66582f-cd95-4334-b0da-ebea68480cd1/how_long_should_i_study_for_the_ccna.pdf
    • https://s3.amazonaws.com/guwutivupudutu/mapa_bosque_de_chapultepec.pdf
    • https://s3.amazonaws.com/bisapovepizaj/givivebejumazef.pdf
    • https://uploads.strikinglycdn.com/files/073d5409-5df7-4b50-abd1-2fc071a0e4a0/394096961.pdf
    • https://s3.amazonaws.com/zodererezuzuxi/gerd_guidelines_pediatrics.pdf
    • https://uploads.strikinglycdn.com/files/2522c3fb-e4ea-4543-88b7-fbd8e11527cf/7240583120.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_off0000f1a0.bin
80c551546d3df49f0903d028d9a1afc14fb4300d0a52259344075b2a8a538280		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A0 5544 bytes
font_01_sfnt_off00010475.bin
34165c90c5c69f0cfa0b781b3b4d36758de54b2a0695ff6d3a324e7987e40bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10475 11016 bytes

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