Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b7ccbdee1c8ded…

MALICIOUS

PDF

81.7 KB Created: 2021-04-17 16:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4d01f5d67f028cc6e2d16b372f2286d6 SHA-1: f73d0abe9f9ebe717b5cb56b48d3870fa84472f8 SHA-256: 36b7ccbdee1c8ded5aa76cdede7d8c8dc227a530ca11f7c8a6762ab620d012bd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/strik?utm_term=kubota+bx2200+for+sale+canada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460972/normal_606beeac7834b.pdfIn PDF document text
    • http://vostokzapad.su/zasixubatapigulifq5t1j.pdfIn PDF document text
    • https://cdn.sqhk.co/wovenebi/jeogfjc/control_products_freeze_alarm.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/hegiQgi/597183675.pdfIn PDF document text
    • https://cdn.sqhk.co/mutuwatu/bMNhajd/69500710227.pdfIn PDF document text
    • https://cdn.sqhk.co/figesuweno/Lsic7hg/ios_core_graphics_animation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418963/normal_602cf4e94778b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464080/normal_5ffe7b0c13245.pdfIn PDF document text
    • https://cdn.sqhk.co/salujokep/fjf6Bgg/dofinovozisikuvafatosej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_602740cf60e9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419193/normal_605305a729ae2.pdfIn PDF document text
    • http://sodahq.club/how_long_does_it_take_to_reach_deep_sleep96hg7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387718/normal_600c540db049e.pdfIn PDF document text
    • https://cdn.sqhk.co/fabokofe/dgehahd/24635278617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_603ac0a919a15.pdfIn PDF document text
    • https://cdn.sqhk.co/voguzasijur/gjifij9/meteor_hitting_earth_2021.pdfIn PDF document text
    • http://carinsusa.com/zefitiztum0.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoroxur/jc9jhiE/sikoloterupelutu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5fcaa4b1ed9b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/27128b8d-c583-44dc-80d4-9f860a86f18d/chicago_manual_of_style_punctuation_inside_quotation_marks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6671eb6-3f9f-4e00-88f5-5c9c2f63c6ef/what_reading_level_is_the_sea_of_monsters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2ca1bdc-7144-43d0-a95e-cd590ec5f23e/45123230084.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDF 5464 bytes
SHA-256: af1e1c0d389ffd05e958f929e95f8cd5726e160a7b7e5ef959c798d0874d3242
font_01_sfnt_off0001108a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108A 12112 bytes
SHA-256: db64cb6753d0c8c0471e132ad0313feb8399666985c11a2312d217be5a89e33e

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