Malicious PDF — malware analysis report

Static analysis result for SHA-256 8514446bfc7a590a…

MALICIOUS

PDF

70.7 KB Created: 2021-02-22 21:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9914aab755aae0808b12a18cbcde39e4 SHA-1: f4ccdd693f0d7d0a5c7cf8df3ac1e70068f91b31 SHA-256: 8514446bfc7a590ac9ce345f7c72d065ee2aac30019bdfe82b4cab67ac8f6b70
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating a phishing or trojan threat. The embedded URL points to a domain associated with Verizon router troubleshooting, suggesting a phishing lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs are common in malicious documents designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=verizon%20router%20blinking%20white%20then%20red PDF link annotation
    • https://cdn.sqhk.co/taxeseta/hbUpQqR/468461323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474980/normal_5fe69782a7096.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/ijMRLgh/bank_account_balance_sheet_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/noluxokeruma/LRjaK8Q/nadar.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/Z8t3jgk/furreal_friends_gogo_app.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/jjhcKgi/making_rope_binding_guitar.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwutu/WmBhdpS/yellowstone_cast_season_4.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/Z5gjmgh/wawepesulisuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383921/normal_60015637c3130.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385014/normal_5fe0366b18d46.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/8VYhdDL/58791648242.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/ggghhgT/xogojolopojug.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/jbeBhhW/stack_attack_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/samofetob/b9KigXK/73205113475.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466175/normal_600214ea09762.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/hgEejhg/mp3_music_player_application_download.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/jinotugiwomo/c_c_informatica_miguel_pereira.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/lactol_kitten_milk_feeding_guide.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_off0000d882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD882 5008 bytes
SHA-256: c086bd64ebf192fe142581def601a931766b60bf04f895383a3160144424734a
font_01_sfnt_off0000e9a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A2 10548 bytes
SHA-256: 295249f7a43bf0abcc1a097344a828f94dbb2fd01cb3f148ff9a568d24eb3dab

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