Malicious PDF — malware analysis report

Static analysis result for SHA-256 840b3601fa7e9f2a…

MALICIOUS

PDF

72.4 KB Created: 2021-02-19 23:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 99b8345867ef6201a0f3a4608bd8a44c SHA-1: 8ba16bc1cd66695e0a60bef032cf1739d86f54ce SHA-256: 840b3601fa7e9f2a3b30ecbbd1aa9ddd4acc5104e1d6e6a4d0e77614b8b771e1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru' which is presented as a search result for a scientific query, likely a lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wb?keyword=how%20do%20intermolecular%20forces%20affect%20solubility PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476434/normal_5fdf2b78e9ec5.pdfIn PDF document text
    • http://kino-vezde.ru/tobujojr8qg.pdfIn PDF document text
    • https://cdn.sqhk.co/lunapolakezo/ajaKJgI/voice_recorder_on_iphone_7.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/wijKrib/redstone_maps_for_minecraft_pe.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/hdjiqx7/53819946561.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuzotulerijenej.rf.gd/sodapexupisusibewozud.pdfIn PDF document text
    • http://magomodatibotu.epizy.com/deveribudanovigisezegodiz.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/77476399083.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/sizevemezobojatidokapod.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/55477902299.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/guided_reading_activity_5-_2_clothing_choices.pdfIn PDF document text
    • http://xoxigibutu.epizy.com/tri_fold_brochure_template_photoshop_cs5.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/movimiento_rectilineo_uniforme_en_fisica.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/bugatti_car_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/58019942614.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_off0000dff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF2 5460 bytes
SHA-256: be3ce4cc15c479eae390edbbf8dd5dc6e7978c291f6a45a7006640c08652ffaa
font_01_sfnt_off0000f27e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27E 10056 bytes
SHA-256: da803c164f84241809337fd25f5d1bca874e78f48628f3f6053092f44e5326eb

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