Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c463aeedca0a64…

MALICIOUS

PDF

83.3 KB Created: 2021-01-13 11:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ab1f9b0041a2331df47ed485b3789715 SHA-1: f63051c80adc45593ca8f525d8fd26cba7126f0c SHA-256: 88c463aeedca0a6424c26feddc840093ef2f47fd597016e2b5c6e864fb630a1d
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://trafficel.ru/123?utm_term=commando+2+kizi+games', which is likely the primary lure. The document body, though heavily obfuscated, suggests a context related to games or educational content, aligning with common phishing lures.

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://trafficel.ru/123?utm_term=commando+2+kizi+games PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423714/normal_5fa17b2712f6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366309/normal_5ff14bb28de58.pdfIn PDF document text
    • https://cdn.sqhk.co/bipujawojeli/cRnujds/vunosatuj.pdfIn PDF document text
    • https://cdn.sqhk.co/nudorijoraka/jghbgcO/9th_class_admission_form_2020_lahore_board.pdfIn PDF document text
    • https://site-1172801.mozfiles.com/files/1172801/uncertainties_physics_calculations.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/cKifngh/dunkin_donuts_coupons_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/semegopo/bjgig8V/ziwakifege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5fba2d609adf2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zafirawit/jomanovegazimewafexelovap.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/zuwodafapibonarakito.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/software_asset_management_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/kisizimagule.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/blur_pc_game_for_android.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000119ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x119EF 22132 bytes
SHA-256: dca1ca195544a54ab9db6d21d4756e4d41627f5dfe65a628e822b893d518522b
font_00_sfnt_off0000d87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87B 2920 bytes
SHA-256: 4498013900d8a35dce56b5f43511bcb986250b4966b888f019c581a5b019e9b8
font_01_sfnt_off0000e2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F1 5168 bytes
SHA-256: d86ba549d4131246e231fecb24b0a054dee7924f889c108497e4d5cf72273d9a
font_02_sfnt_off0000f47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47F 11440 bytes
SHA-256: d0080befa09cc05c5a9a877a19580d4ddb5cfe24a3da09782cf8c94412ef13f9

Open this report in the interactive analyzer, or submit your own file for analysis.