Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b565ee2d1c0d54…

MALICIOUS

PDF

88.5 KB Created: 2021-04-17 02:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2941a2ddde00c4d0cd77ba148e5ae144 SHA-1: 7704cc7dc596e7562663f025fc503d58e8ea7a68 SHA-256: 85b565ee2d1c0d542424e9e85e4a183341b45fdaeddca768d0ca9d8f0038910a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to 'Lenovo g50-80 ram details'. The presence of external URIs and the ML classifier's high confidence score indicate a malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/strik?utm_term=lenovo+g50-80+ram+details PDF link annotation
    • http://zespodsvetkoy.site/john_deere_js40_owners_manuala5mlj.pdfIn PDF document text
    • http://busibear.com/stars_hockey_game_schedule8fi1s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463807/normal_5ff421fedc73b.pdfIn PDF document text
    • http://serviceforyou.site/89988128924jgalq.pdfIn PDF document text
    • http://reliables.ru/boxisosowol6yayi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409818/normal_60693e047e549.pdfIn PDF document text
    • http://kind-insta.site/serararujoburasipuxuxizihs6y1.pdfIn PDF document text
    • http://prosale.company/punokitibozitadalizuehdmw.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/xaliwalufoguni/battle_royale_machete.pdfIn PDF document text
    • http://jetetekeputesi.epizy.com/53103344010.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/entered_apprentice_catechism_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/26103519162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bf29afd-8a0c-40eb-8ac4-4b38c7bc44de/kafezaturemel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/855bcc7f-9a84-4efb-a88c-4006d12fd982/the_hobbit_3_full_movie_in_hindi_download_720p_worldfree4u.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e03b451-717d-4438-8ae7-4fe78161d099/who_makes_the_best_battery_powered_pole_saw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475f4470-ee29-452f-888f-0c96797aa6ae/wagebirabukepijar.pdfIn PDF document text
    • http://xezakuwedujit.rf.gd/aditya_hrudayam_stotram_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/rifixenunadi.pdfIn PDF document text
    • http://xizevobawilu.epizy.com/crochet_patterns_for_baby_blankets_with_animals.pdfIn PDF document text
    • http://boxosupeteb.epizy.com/command_prompt_commands.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_off00010d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D85 5428 bytes
SHA-256: 242d0fd68d24f9d4dd35c9554af5c4d038ee1bc9709747d960387aadf0ea6a4e
font_01_sfnt_off00011ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF2 11312 bytes
SHA-256: c9613446ec444c8bb74e27110b63d740017a8a91783190ef62b28a954eee9506
font_02_sfnt_off000146aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146AA 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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