Malicious PDF — malware analysis report

Static analysis result for SHA-256 29aada0323505a49…

MALICIOUS

PDF

81.4 KB Created: 2021-05-18 16:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d7f922a3ff4869991c3c3bd555e5d36c SHA-1: 840d14215208f6d711ecfd49f26a27b326c91a3f SHA-256: 29aada0323505a491c08150cbe6f9b8dfd77be81e4e6fbcad1c6a8ef6a173d79
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one pointing to a suspicious domain ('leonvi.ru') that is likely part of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/strik?utm_term=what+do+the+dead+sea+scrolls+tell+us PDF link annotation
    • https://bolamowoxuwev.weebly.com/uploads/1/3/3/9/133997192/6093441ff.pdfIn PDF document text
    • https://teriwogawuf.weebly.com/uploads/1/3/2/8/132815342/pogufexane-murupurizewi-xisagifetipe-jivatolex.pdfIn PDF document text
    • https://nevajuto.weebly.com/uploads/1/3/2/6/132695651/5240321.pdfIn PDF document text
    • https://vipamabukaxeban.weebly.com/uploads/1/3/0/8/130874648/038bf81651762.pdfIn PDF document text
    • https://rofoxanubojinud.weebly.com/uploads/1/3/2/7/132740779/pegem_xujukimomir.pdfIn PDF document text
    • https://ponorevex.weebly.com/uploads/1/3/1/3/131398269/gasebuwokizekewaxe.pdfIn PDF document text
    • https://zobujopexa.weebly.com/uploads/1/3/0/9/130969678/c8b4ef1e1.pdfIn PDF document text
    • https://jisofuzevilane.weebly.com/uploads/1/3/0/9/130969501/nobabeze-zubagig-dosemipevaguvid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c4f0af0-862f-4be0-ba9c-ec112237df15/33419427500.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/51744763227.pdfIn PDF document text
    • http://zowetilazu.rf.gd/43256828228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/112051fb-4d54-4da3-88bf-5e63a15265d4/5_point_likert_scale_template.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/emotion_wheel_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/sulokupoxirokukotozezotiw.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/how_to_clean_bosch_washing_machine_drain_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/31189059137.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56512cc7-ff4f-4459-807f-8b420f17a973/what_it_means_to_be_anointed_by_god.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a96a4292-87d7-4471-9e59-c5a1f3096e70/49833047039.pdfIn PDF document text
    • http://nedajazamofo.epizy.com/90965103720.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/sofokiro.pdfIn PDF document text
    • http://lunupesefobe.rf.gd/96807763926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b84f4241-6d47-4974-a575-4256b5835200/fetawusuwotinutokigeg.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/xorawi.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/69376794430.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/tales_of_a_fourth_grade_nothing_read_aloud_chapter_2.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_off0000ffe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE4 5040 bytes
SHA-256: 1ba33e5df4e412393d45348b10d99abb677af8a195d70160ead8ab25d0a7b3e3
font_01_sfnt_off0001110e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110E 11012 bytes
SHA-256: f4ed095ea70a9c0ebf8173ee1f0b894d8284eadbf8c1e85b54d9c2fe80eb77e2

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