Malicious PDF — malware analysis report

Static analysis result for SHA-256 6329bbe7b9da26d2…

MALICIOUS

PDF

76.8 KB Created: 2021-04-05 18:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bcf53d6d10eca444e6db74ecb5243b4 SHA-1: 3055db8e4309104580303021da1dfd5c4300749b SHA-256: 6329bbe7b9da26d2422008ddf9a7af8cedd8721e9624ed9fa283135ff48124f0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a search results page, likely a lure for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious site, potentially for credential harvesting or further malware delivery.

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://lozipotod.ru/wix?keyword=iowa+high+school+football+rankings
    • http://tinesemexogo.mygamesonline.org/197965006.pdf
    • https://cdn.sqhk.co/noxibogalu/gfjebFr/sonic_hedgehog_minecraft.pdf
    • https://cdn.sqhk.co/kitujesijak/Jjco88g/mafia_city_cheat_codes_android.pdf
    • https://cdn.sqhk.co/zebenane/jp8idgi/32983430355.pdf
    • http://zukoretevir.medianewsonline.com/architectural_working_drawings_detail_drawings.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6ecff994-9a8e-4b42-857d-ee0d6c8e069b/safe_haven_adt.pdf
    • https://s3.amazonaws.com/jeponowon/8904127087.pdf
    • http://duxepivol.myartsonline.com/autocad_2020_shortcut_keys_for_commands.pdf
    • https://uploads.strikinglycdn.com/files/3f10120c-b4c4-4828-b369-fe99feac27d3/sozisor.pdf
    • https://s3.amazonaws.com/gogoxowiniza/xadigegibo.pdf
    • https://s3.amazonaws.com/lukepepe/how_search_google_with_a_picture.pdf
    • https://uploads.strikinglycdn.com/files/310fd60a-dfb7-4773-969f-5258f8d57212/14486072364.pdf
    • https://uploads.strikinglycdn.com/files/538a14de-8321-4664-a114-a8050c7a1bc0/92402879102.pdf
    • https://s3.amazonaws.com/jexijer/piwux.pdf
    • https://uploads.strikinglycdn.com/files/bd70af94-5b09-4eae-b752-b9b73ff4d1b1/92059992980.pdf
    • https://uploads.strikinglycdn.com/files/b3a70ff6-02ef-4a61-96f4-e1b2b5084a7e/kingdom_manga_628_release_date.pdf
    • https://s3.amazonaws.com/sajatofubote/20234126075.pdf
    • https://uploads.strikinglycdn.com/files/4c430b2a-5d59-4ac1-be0f-476fc9eaa48e/internal_auditing_standards_for_the_philippine_public_sector_manual.pdf
    • https://uploads.strikinglycdn.com/files/0d9c1aa8-bf14-46fb-b0de-fe301e63c78b/powepo.pdf
    • https://uploads.strikinglycdn.com/files/599b55ad-e52e-423e-9d50-78ee4ea31302/71738652851.pdf
    • http://zitasixan.atwebpages.com/62863108557.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_off0000ef09.bin
5b63dc74773e15d9fb92f4b8cd0f18de696c1825b8e4bd5b1a7ca5e3b0f98351		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF09 5376 bytes
font_01_sfnt_off0001016b.bin
dc9e96b57f2fd6b2c7fb4b3aa54269564e1c29d05b6a49c8dd4c2273604b0311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1016B 10800 bytes

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