PDF malware analysis — malicious · 11dc813fb5086ec1

MALICIOUS

PDF

70.8 KB Created: 2021-02-16 00:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 38103bf434e0077812d4b8ee1742da18 SHA-1: ea7ad5ba970746afbe3ab21c6da90e3e53bc3959 SHA-256: 11dc813fb5086ec18d69848f960a73fa8cee07971ab51caba486a283f98befae

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to reference product names, suggesting a lure to entice users to click the malicious link.

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=sole+e35+vs+e55+vs+e95 PDF link annotation
- https://cdn.sqhk.co/zuxosutuku/gaUjddg/movie_premieres_october_2020.pdfIn PDF document text
- https://cdn.sqhk.co/bisadumiza/yhcgdhf/kibuxe.pdfIn PDF document text
- https://cdn.sqhk.co/nizivatitogu/ih9GTww/89858291632.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4392215/normal_5ffd45c093dca.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zifosasexinedi.rf.gd/apa_format_6th_edition_example_bibliography.pdfIn PDF document text
- https://s3.amazonaws.com/dikomavomem/amazon_prime_app_for_mi_tv.pdfIn PDF document text
- https://s3.amazonaws.com/tumuzu/beethoven_bagatelle_in_a_minor_sheet_music.pdfIn PDF document text
- https://s3.amazonaws.com/wemazun/education_board_result_2019_marksheet.pdfIn PDF document text
- http://gomiguru.epizy.com/verithanam_song_lyrics_in_tamil.pdfIn PDF document text
- https://s3.amazonaws.com/vudivuzakal/vefokijifev.pdfIn PDF document text
- https://s3.amazonaws.com/zalisujezajaje/stay_with_me_audio_song.pdfIn PDF document text
- https://s3.amazonaws.com/suxuzubojut/jeux_interdits_sheet_music.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_off0000da8f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA8F	4980 bytes
SHA-256: `2609bbdcb66a9261d0a1e0d3c079c42e335685ba95d6809e76c857ff51bbaa52`
`font_01_sfnt_off0000eb9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB9A	10212 bytes
SHA-256: `e50903165d73b74d21f31d1661d553606ca0eac95936afb58dd095f750806f2a`

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