Malicious PDF — malware analysis report

Static analysis result for SHA-256 8677cdd8f35c1f62…

MALICIOUS

PDF

70.5 KB Created: 2021-03-24 05:08:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09667ad484990627c6ccedabc19005bf SHA-1: 1c345737646b2fe7729404c8772460d0f2944721 SHA-256: 8677cdd8f35c1f62b56513431a41b4b128d216c5a5f411f9e5f9b0f6bd008d58
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 external URL. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. The presence of an embedded URL suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/strik?utm_term=memento+mori+lyrics+coletta
    • https://static.s123-cdn-static.com/uploads/4476001/normal_5fede2e15c774.pdf
    • https://static.s123-cdn-static.com/uploads/4464851/normal_60027fd361db6.pdf
    • https://cdn.sqhk.co/telapunojawu/Ijjjaif/driving_school_2017_unblocked.pdf
    • https://cdn.sqhk.co/giwitosak/aDXibge/wallpaper_hd_apple_iphone.pdf
    • https://static.s123-cdn-static.com/uploads/4384159/normal_5fe45073c2724.pdf
    • https://cdn-cms.f-static.net/uploads/4501645/normal_603ec0863aabf.pdf
    • https://static.s123-cdn-static.com/uploads/4426059/normal_5feb8e787871f.pdf
    • https://cdn.sqhk.co/kejaxedusuk/ibijE0r/80_s_music_free_listen_to_online.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wuxatafadakifu.epizy.com/basic_electronics_projects.pdf
    • http://samipada.epizy.com/97322283950.pdf
    • https://uploads.strikinglycdn.com/files/e5f5e09f-3cf4-452b-94f6-7c99448aacb3/alex_rider_skeleton_key_book.pdf
    • https://uploads.strikinglycdn.com/files/4dbc98bb-9970-4a76-bb49-d48c90ab0ac8/who_gives_this_woman_away_to_be_married.pdf
    • https://s3.amazonaws.com/kudufigunabi/is_this_book_age_appropriate.pdf
    • https://s3.amazonaws.com/metakibeme/admission_form_in_html_code.pdf
    • http://kivaxabobusited.epizy.com/bibupenekukomitivoz.pdf
    • https://uploads.strikinglycdn.com/files/3f39c3b6-22f2-4994-b87c-d8cccd746171/wuxujanemup.pdf
    • https://uploads.strikinglycdn.com/files/bcdecba3-6703-404b-9881-369663153188/65187799446.pdf
    • https://uploads.strikinglycdn.com/files/e2e5ace0-5b56-4386-a15c-4c6b703492d9/the_bookshop_of_yesterdays_characters.pdf
    • https://s3.amazonaws.com/pizivurapab/ranovi.pdf
    • https://uploads.strikinglycdn.com/files/be41c2bb-fb62-4603-b80c-09b362ba3bb1/soundcraft_ui16_tutorial_espaol.pdf
    • https://uploads.strikinglycdn.com/files/d10814f6-14d2-48d5-a2fd-a7d8d4a2872a/dezimigaju.pdf
    • https://s3.amazonaws.com/pafexegud/68111985109.pdf
    • https://uploads.strikinglycdn.com/files/ac852bd9-c821-4c2f-bf2d-a6446aa50f33/50762231396.pdf
    • https://s3.amazonaws.com/dufekifaral/amanahraya_trustees_berhad_annual_report.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_off0000d542.bin
12362bb66231540e8779308385e645392cc0793cc95accf0ac777fc9d6815791		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD542 5052 bytes
font_01_sfnt_off0000e666.bin
10266d3eafb2d3cb2c6a88b28ebf4520cc12102b01c307be78e2e44d928d79f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE666 10992 bytes

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