Malicious PDF — malware analysis report

Static analysis result for SHA-256 349008a05314182c…

MALICIOUS

PDF

69.2 KB Created: 2021-02-13 04:28:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 826bf8ba3bb515346adc978bef304d49 SHA-1: 7aeabe4dfd6b9ce628445b068fb1d1f7174d07d4 SHA-256: 349008a05314182ce3b46e085104b3a0b4e23dab56704c40964a3acc54992ed8
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating the presence of external URIs and embedded URLs. The document body, though heavily obfuscated, suggests a lure related to 'Prince Albert historical pictures'. The embedded URLs point to suspicious domains, likely serving as download or phishing sites. No scripts were extracted, but the PDF structure itself contains malicious elements.

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://bologen.ru/123?utm_term=prince+albert+historical+pictures PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5ff36535376af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393641/normal_5fd651b80792d.pdfIn PDF document text
    • http://euroshopmn.space/python_cheat_sheet_for_competitive_programmingpw9mq.pdfIn PDF document text
    • http://idealica-uficiale.website/2722848444ntlm6.pdfIn PDF document text
    • http://rewita.fun/massage_therapy_book2rthm.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/taroksqazp.pdfIn PDF document text
    • http://bluebadge-support.com/american_english_file_starter_teacher_s_book_downloadcucbp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5fcf059ae7128.pdfIn PDF document text
    • http://centerverifybadge.com/luxuwoxawonujb3nib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421461/normal_5ff5bac7488e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451970/normal_5fe51a1de8c47.pdfIn PDF document text
    • http://wogaxuma.22web.org/razer_synapse_3_macro_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383467/normal_5ff49baa43b0b.pdfIn PDF document text
    • http://leyloften.online/resignation_letter_format_in_wordbohoe.pdfIn PDF document text
    • http://rotelebi.22web.org/82066980532.pdfIn PDF document text
    • http://chelamela.org/bed_cover_information3qkbu.pdfIn PDF document text
    • http://kihepc.xyz/bookmark_onedrive_ipad90ru4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tovukazemav.epizy.com/latest_bollywood_brrip_movies.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_off0000d0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F7 5164 bytes
SHA-256: cc6aa7faf812598262386e14f5ec730e20ca9b8972f31b0c69153fc2b7a17450
font_01_sfnt_off0000e277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE277 11004 bytes
SHA-256: 861f119d8ebd0e43db2ae187bffd679dad833fb42faec89f172486b34566b3a0

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