PDF malware analysis — malicious · 53c0be1589ad09d4

MALICIOUS

PDF

72.6 KB Created: 2021-02-23 19:44:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 83e4864921f4a1c02e1c4a5338aea336 SHA-1: dc10e453143814baf69cf9b39caadc0fa5125997 SHA-256: 53c0be1589ad09d44293e21989eab88868a722d738abaa9be79a363a85baaea7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of the phishing lure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the idea of a web-based lure.

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/strik?utm_term=power+book+11+ghost+how+many+episodes PDF link annotation
- https://static.s123-cdn-static.com/uploads/4386095/normal_5fcbadb89bd9e.pdfIn PDF document text
- https://cdn.sqhk.co/gapebeve/hcFlhb9/dojigufajiza.pdfIn PDF document text
- https://cdn.sqhk.co/kulukopupiw/fiedRjh/mogozawa.pdfIn PDF document text
- http://andyhong.blog/word_module_1_sam_project_1gegrl.pdfIn PDF document text
- https://cdn.sqhk.co/ligilitojob/y8gAghw/80491582162.pdfIn PDF document text
- http://ru-en.xyz/build_my_life_housefires_bpm52alo.pdfIn PDF document text
- https://cdn.sqhk.co/miwataxanis/gfrjjia/instagram_chinazone_tattoo.pdfIn PDF document text
- http://giftcard-sale.store/wanidu9sv04.pdfIn PDF document text
- http://rubeatyshop.xyz/dikafikl80d4.pdfIn PDF document text
- https://cdn.sqhk.co/jukunobegabe/e3VZhcN/fapokurepelag.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/jemisajoda/global_chinese_art_auction_market_report_2017.pdfIn PDF document text
- https://s3.amazonaws.com/xovajukoxin/15091178336.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dd51.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD51	5792 bytes
SHA-256: `3aa5636ab22a7b55f49277f071452c6d8d48cd5022b905c42338ebcfcd497cbc`
`font_01_sfnt_off0000f0fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0FE	10612 bytes
SHA-256: `414c82f32ba29cf7f9c0e3cf25557e87647e516ec3f12979b417d188c7f8455d`

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