Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e867df4cbe9d9ce…

MALICIOUS

PDF

77.3 KB Created: 2020-12-25 22:08:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ed12bcd2b7af8d420edcce5c3c96451b SHA-1: bd73f7f9bec377e3080446b32606fffa3e9bb3db SHA-256: 8e867df4cbe9d9ce4c01cf09736fe0e24df3c48a6ae5d26d73db68d850463174
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to download a file. The ML classifier and ClamAV detection strongly indicate malicious intent, likely a phishing or trojan distribution attempt. The document body, though heavily obfuscated, contains text related to downloading a game mod, suggesting a lure to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/strik?utm_term=download+cops+n+robbers+2+mod+apk+latest PDF link annotation
    • https://cdn.sqhk.co/xakatikakizi/4hi40N8/business_plan_template_for_clothing_line.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a0842499-bba2-4fc9-8aec-40594db476de/bob_evans_nutritional_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05188ff2-3e60-441f-91fc-df16758f6349/76112149334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ae6d03-e79c-450a-9c19-cf699c24fbd8/34347113134.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c1bd545-2c14-4d9e-bda8-bc3ddc468ba0/source_field_investigations_david_wilcock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c355ca3-aa22-4132-a1bb-bf9f50520291/63756175853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60e6525f-3543-444a-8fe0-c8142cd77b69/860242160.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d7b9835-444c-4f64-9ddf-f3456bd29a40/57689115370.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/assumptions_of_multinomial_logistic_regression.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358c5512-187a-4cae-b28a-dd2cf8a2d784/download_mac_miller_good_am.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc000e3-7c41-4c6e-8f44-dff23d360302/fabomeniwamadarij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e5dc75b-e0a7-4db4-9663-001c8a50507c/icicle_sunglasses_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ffe58c8-6bb8-4176-bdcb-bb76e1de0788/keniwobesadamakum.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD678 5384 bytes
SHA-256: 63596429e9bf39019020ff818c1e677cd8349d308043e929441b9020633e6502
font_01_sfnt_off0000e8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BC 17304 bytes
SHA-256: 4b8968f56bca9e74778a7131d2b9d7035eb400416aace3622f8fe9255af46746
font_02_sfnt_off000117e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E3 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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