Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4aac6b84f07f85c…

MALICIOUS

PDF

69.7 KB Created: 2020-12-04 10:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 22369c62d69a50f517bdcbb783c5024f SHA-1: 1f082df5d8a06ff6b65b4a1ea7e3475bed3a5aac SHA-256: d4aac6b84f07f85c681a5e996660b2b474acd85e7ab6b2f77018511b133b4aae
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains metadata that may be intended to mislead the user.

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://traffnew.ru/123?utm_term=jerseylicious+pregnant+gigi+hadid PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418587/normal_5f9e924312bc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529095/normal_5fb7f55252081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387932/normal_5fade5e429a5e.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/5fc2bc52c6229360ecb8cfc0/t/5fc8e97e36740e7c4a193ee1/1607002495095/sisosirep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a5d27b4-9e36-49e5-9a73-933eb54c0145/kirovipepig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d9cdc14dfd36fe0adb20/t/5fc5fa704e98326c02df1694/1606810224685/solving_inequalities_with_variables_on_both_sides_worksheet_tes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dbf0116eb00e3c4bba69/t/5fc17695f3de5e49b59bd122/1606514326336/25198033486.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/sabal_point_elementary_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b5e7e9c-55da-4b8e-b93a-6e47b14f898d/36816294970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/946740d7-99d8-45f8-86aa-13e4acf07e6c/pokemon_manual_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5de83d-0fec-4199-bc50-c078ccf12da3/organigrama_de_bodega_aurrera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e92e4551-6a62-4ed5-bbeb-1293b9508d0e/bumper_bully_platinum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed012e537a05ef0936a0/t/5fc1c67a61e25426e17a07a3/1606534781288/in_rhythm_dance_studio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2fd6b97992eb55c026f/t/5fc3e814e18c5c478e7400dc/1606674454375/30991459433.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_off0000d24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24E 5428 bytes
SHA-256: fb69f633b1bc93fa71bbbc6c2e82e3665f87b4cbea545ccc77dd6ed264eb3501
font_01_sfnt_off0000e4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BD 10744 bytes
SHA-256: 72d32f5b0297ce503d113ee43a400705729544f5c11505b2c56ce119bea4bdd7

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