Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db4e757ddb1c3be…

MALICIOUS

PDF

73.3 KB Created: 2020-12-24 21:59:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e372490a6ef1ddad5b59f6e503dede6f SHA-1: 9dacfc8d7168aaf99e6bbe5e87acf263d06a9e3f SHA-256: 7db4e757ddb1c3be1de52eb4bf0ccdd2c3425da319f7136cae78a6b05340d477
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/strik?utm_term=armored+car+2+apk+mod%2528+unlimited+money%2529 PDF link annotation
    • https://cdn.sqhk.co/lelogusobade/jzgjYb1/srs_for_real_estate_management_system.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465930/normal_5fda64af7c439.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/hbejhjf/skyblock_minecraft_servers_1._16._3.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/wilugugo/anemia_falciforme_pediatria_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e859c1c-9651-4cbb-af42-b8b778aa6e76/eclipse_mp3_player_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/268cb67e-cc4e-4b06-bb6f-333d907c2946/texas_holdem_game_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/batman_the_killing_joke_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a10555-11a9-4a15-b192-3c879a3e54b4/michael_h_hart_the_100.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/barcrest_mpu4_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2129de34-a670-4cd6-acfa-20c9851d8711/minifipen.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/intestinal_metaplasia_nice_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd6484e0-42a4-4ec1-aad4-694a370eb5d5/dein_ist_mein_ganzes_herz_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/jorunikufenefefisezejoxab.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/medgar_evers_home_national_monument.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_off0000e091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE091 5484 bytes
SHA-256: 2b1d70d2fed55298255c6ce3d75cc975f2e33ca74d25fe5e88e59bd23d3d8277
font_01_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 10884 bytes
SHA-256: fa0287176092db2362a926a69c84218eea39bfcbf51712bf2c46446f49fe9fa9

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