PDF malware analysis — malicious · 3ffdf6206cc57aac

MALICIOUS

PDF

89.3 KB Created: 2021-03-10 11:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9f18b33555c581085adf08b1c13c9872 SHA-1: 4ef710a50435618d19bddc61617ab765c5701441 SHA-256: 3ffdf6206cc57aac4a187f20941da14a976b979dcef0fe79970118e6a33b9fa5

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that points to a suspicious domain, zajinet.ru. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'Analgesia y anestesia obstetrica pdf', aiming to trick users into visiting the malicious URL.

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://zajinet.ru/award?keyword=analgesia+y+anestesia+obstetrica+pdf
- http://autobuff.xyz/vutoxiduranetovazigukonovjf13.pdf
- https://cdn.sqhk.co/wufotubi/cVZ6hBw/teleportation_device_terraria.pdf
- http://gratoraama.space/47346126756knpnq.pdf
- http://gogotmif.space/bupuniralujefofesobofoxira23es.pdf
- https://cdn.sqhk.co/dutaxato/ahighic/mlb_trade_news_2020.pdf
- http://findssldz.xyz/barriers_to_innovation_in_the_workplace9hqbd.pdf
- http://apsdd54gfv.xyz/45669877584irwke.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/dazovosugev/50679754853.pdf
- https://s3.amazonaws.com/tokafanawa/asccp_colposcopy_guidelines.pdf
- https://s3.amazonaws.com/wiremeresegikon/39578299866.pdf
- https://s3.amazonaws.com/nitajosasa/98185664328.pdf
- https://s3.amazonaws.com/sizadagazagaj/bugesumerimusenuwo.pdf
- http://najaxumededalo.rf.gd/how_to_start_snow_thrower.pdf
- https://s3.amazonaws.com/bomupi/tissot_gentleman_powermatic_80_silicium_watch_review.pdf
- https://s3.amazonaws.com/sirilagewuga/google_duo_video_calling_app_ringtone.pdf
- https://s3.amazonaws.com/satuja/ginozapizuduz.pdf
- http://xinovedef.rf.gd/60684892078.pdf
- http://jopuzasoxu.rf.gd/types_of_landforms_worksheets.pdf
- https://s3.amazonaws.com/xufoxorog/top_paid_android_games_of_all_time.pdf
- https://s3.amazonaws.com/fajujiju/88344886181.pdf
- https://s3.amazonaws.com/nuvukivaxiren/how_to_identify_motherboard_components.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000120ef.bin` `243c8d3fa9ad4bafad8c696b5a721be87516a33f4d720f0e561b4f4afe6594e4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x120EF	5552 bytes
`font_01_sfnt_off000133e3.bin` `79a88e5689e9bc2eb4fb65564fa427bc5e1e6857ef7f237c14469e22f7162d0b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x133E3	10740 bytes

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