Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4cc8bc2090e193…

MALICIOUS

PDF

70.0 KB Created: 2021-03-28 10:42:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2117292059093a5aad50949cd442c53f SHA-1: 57c548c64fdebcda9ec7c3a06a6d0857062a068b SHA-256: 3a4cc8bc2090e193f407cccb956808fa6f0ad9b84af3fc013e1fba3d8749e718
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/123?utm_term=apache+commons+configuration2+jar
    • https://cdn.sqhk.co/tivuzofep/LEHgdid/finiseporafuronuxumifuka.pdf
    • https://cdn.sqhk.co/xosaletozobi/eVyhcgY/35073409143.pdf
    • https://xuzekivaf.weebly.com/uploads/1/3/1/4/131453918/9560717.pdf
    • https://cdn.sqhk.co/murajefovel/igxwFjh/xipuvurizinedilelijaro.pdf
    • https://gabejudunutulan.weebly.com/uploads/1/3/4/8/134887900/jajajisugeveb-mexufupug-timirewevitusig.pdf
    • https://cdn.sqhk.co/soxuvezosapa/H2Eheie/88189380949.pdf
    • https://cdn.sqhk.co/gagupibi/jjcVeBT/kanogako.pdf
    • https://cdn.sqhk.co/boguzivipel/tjbpzMB/petufaduzufedakixuwa.pdf
    • https://voxudipuxun.weebly.com/uploads/1/3/5/3/135319737/mefawitujezikeg-xumiraxadaweto-fitabarezasume-gegib.pdf
    • https://cdn.sqhk.co/xororofomed/jdgfheB/defend_avenger_xcom_2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/makumapikeze/23716281906.pdf
    • https://uploads.strikinglycdn.com/files/9d3ea43f-6c38-4f3f-9613-bc1f7141c6b3/searle_social_construction_of_reality.pdf
    • https://s3.amazonaws.com/tugumeb/11314252864.pdf
    • https://uploads.strikinglycdn.com/files/69635379-5f1c-4f70-8fd9-af5087965e35/81440860651.pdf
    • https://s3.amazonaws.com/pavujiniz/hands_on_database_2nd_edition_download.pdf
    • https://e4da1597-3bb3-488b-9226-7c2c9e06e9ce.filesusr.com/ugd/db5d73_3624520e2e3448d1aafe8ddf260b9365.pdf?index=true
    • https://s3.amazonaws.com/lekezaru/4422884969.pdf
    • https://s3.amazonaws.com/wetevali/67866125326.pdf
    • https://uploads.strikinglycdn.com/files/75910159-b804-4cea-9c8e-335be883cf7d/circe_madeline_miller_nyt_review.pdf
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_f8ab74de04784c8b8e174eaf10081cca.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9342e7ed-0727-41e2-aa10-aeb7f7ccbd70/9817232220.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_off0000d3cd.bin
9d66cabc95e21592507645de071bacd98892a577a44574cbedbdb9de326e3fac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CD 5592 bytes
font_01_sfnt_off0000e6b1.bin
d9af4778d4f3e9acfcacd01ab114e27e4b12a6a4e20a6170aa38a217a1e33840		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B1 10448 bytes

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