Malicious PDF — malware analysis report

Static analysis result for SHA-256 25481c4059bdff66…

MALICIOUS

PDF

128.6 KB Created: 2020-12-04 21:29:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0bf632fbffd0427ed2b86b9994b60a24 SHA-1: dc2c7d9e2c923044196516cbf47ee8feca70e8ce SHA-256: 25481c4059bdff66bc5a172a0be6f59b9282b110cdd0e39333074c1d6ca9fc0d
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffe.ru/123?utm_term=la+luna+sangre+september+28+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403260/normal_5f9c493998776.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5aed588c99b6d37c7fd7d/t/5fca25a052b5874c85994ff5/1607083425467/ximuvoriremimavikituk.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/37884026080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/333ca43f-6d2f-4c77-9850-bc352744f9a7/46055277349.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc294d0bda9c57a97c8e281/t/5fc3dfe518e72e5fdb4f076d/1606672357420/network_marketing_books_hindi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/warrants_roanoke_va.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/jill_de_jong_md.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0c5c1972c46e3c66891e/1606290524968/babijiru.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ebc9085bf90c0efd2d89/t/5fc8bcd6217b3604ede3b4d0/1606991065603/lixizitigoxufajeweridu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef92bddc-2e8c-4420-8278-c0b86b3cc423/20940225495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/426be012-7bb8-4a35-85f2-ce8a5626f2b4/zogezili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b8bfa6f-ef23-49dd-bd33-901bc8f357ea/sadlier_oxford_level_g_unit_9_antonyms_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/easy_animation_maker_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/362871f9-5edf-4646-95ed-8b99fb408d62/introduction_to_a_formal_report_examples.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0187aa5bc066edfa15e28/t/5fc320a0f81c9a2a0c08c702/1606623392845/46227571283.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_off0001bae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAE1 5896 bytes
SHA-256: 4323955d8ce270039988c35e456e0eafb63eba15693ac0aae0b75b3f65c2760e
font_01_sfnt_off0001ced5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CED5 11468 bytes
SHA-256: b6d15a99ad615e0466f09a885b1adab32b66d36c8591beee15f9a9eccb74ae60

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