PDF malware analysis — malicious · 3bfb6a5bcef680a5

MALICIOUS

PDF

66.6 KB Created: 2021-02-19 19:34:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16

MD5: 129779261adfe8cae3b934b9bef72441 SHA-1: 26bc8785eeb57f2f39376dda60e5b2d88a24d4cd SHA-256: 3bfb6a5bcef680a5e13225d319ed0448dbb4ac195656cc7a58f596a7e6616e31

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to 'seumenha.ru', suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, appears to reference 'Lego harry potter hogwarts yearbook 2020', likely a pretext to entice users to click the embedded links.

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://seumenha.ru/strik?utm_term=lego+harry+potter+hogwarts+yearbook+2020 PDF link annotation
- https://cdn.sqhk.co/malevevipali/XwghWj5/live_video_of_utah_earthquake.pdfIn PDF document text
- https://cdn.sqhk.co/pajerelo/OJ7Kihj/ultimate_car_driving_simulator_hack_version.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371791/normal_5fda5cb548539.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4414871/normal_5ff5a36762894.pdfIn PDF document text
- https://cdn.sqhk.co/mixaluwekitu/xFghuhj/how_to_draw_yugioh_monsters_easy.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488339/normal_601ce6e8d8796.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365628/normal_5fd61c75f10e7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367308/normal_5ff666bacb43a.pdfIn PDF document text
- http://wonnaturila.space/246959784501bx6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4500447/normal_5feb997d0c8b4.pdfIn PDF document text
- http://repair-telefonov.ru/cosmology_of_monsters_endingju6y4.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c515.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC515	5664 bytes
SHA-256: `efe76b27e317dc6c67a537cef55fc03d04de723e11acead9305086c1a58d8caa`
`font_01_sfnt_off0000d870.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD870	10856 bytes
SHA-256: `9fecdb3ff14a709364fdd00bb38782d38c608dd98728984e47755048f6d1d33c`

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