Malicious PDF — malware analysis report

Static analysis result for SHA-256 bece861133186fd5…

MALICIOUS

PDF

75.7 KB Created: 2020-11-26 21:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 58339d542ec08e101d01e64ea406e3a7 SHA-1: 9628a128503e4b081b1c81b866e29c27899dc6b4 SHA-256: bece861133186fd5c665e886dea71ec919a0c269ac63daaf0a1f652ade95f306
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 0.9998

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://traffnew.ru/123?utm_term=modern+android+icon+pack+paid+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424011/normal_5fb4e544d80b5.pdfIn PDF document text
    • https://xujifedivo.weebly.com/uploads/1/3/4/8/134862591/widorejize_xuben.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373509/normal_5f8a327410f01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446636/normal_5fbc15978d7c3.pdfIn PDF document text
    • https://karozazosepi.weebly.com/uploads/1/3/4/3/134316788/a57cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5f97ca3688ba4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/damerirazib/super_mario_64_ds_rom_europe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7410346c-d754-4d95-88d8-3e94309fa7f4/nufefigefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e3f6a0b-cb66-43a3-b82b-ed5fd256c8ba/43475173716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8174b7a5-2c85-42b0-954c-2a4deb2550c3/parts_for_bostitch_nail_gun_sb-1850bn.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/banking_industry_growth_trends_in_ethiopia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b709ceba-18dd-43ff-ab53-d66cf6a4c3fe/stormur_lyrics_sigur_ros_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01af22b7-d56c-48fd-a597-6354b1193868/lubaxolaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aae51ba-2772-4045-8078-ba7441ddb874/art_contour_line_drawing_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ef1f60-184c-4119-90cd-c5186cd992bf/gapoxufegafure.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD488 4928 bytes
SHA-256: 59f9abd8393f48ff8f5452c3c34cb2207df229a75df9b141683411a4c65b330d
font_01_sfnt_off0000e56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56B 11348 bytes
SHA-256: e93b5174ae5910810b13b821ba5e369cefb1d5af615b7cfd87d252a10217f9f7
font_02_sfnt_off00010c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4C 16204 bytes
SHA-256: 1873fa7a539ff00c8c1392723f18eb1e977adbfda941d447d459c5f21b93b389

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