PDF malware analysis — malicious · 4fcedf314636a9cd

MALICIOUS

PDF

76.2 KB Created: 2021-03-22 01:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b0fb81cd6c23cbf11310202e85581689 SHA-1: b96cd9a402233ae408f0d0ffa58765d534e6579d SHA-256: 4fcedf314636a9cd370bbf09406d126fdd33b5a35be9798a5eac33bb0fa26e24

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The document body, though heavily obfuscated, appears to be a lure for the embedded URL. The presence of PDF-specific heuristics and the ML classifier further support the malicious classification.

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://pelibifir.ru/strik?utm_term=what+to+a+slave+is+the+fourth+of+july+summary
- http://tokiridevifo.medianewsonline.com/awakening_the_heroes_within.pdf
- http://juzufezike.mygamesonline.org/kisumojebinepep.pdf
- http://baffer-shop.space/how_to_write_a_cover_letter_internal_positiony1vy8.pdf
- http://silekutum.medianewsonline.com/ascii_table_256.pdf
- http://tixshopclub.fun/22554518050jir7.pdf
- http://xadexawufomovi.sportsontheweb.net/92712362668.pdf
- http://vedibekupuviru.iblogger.org/pawapojurovoroja.pdf
- http://vivekawiga.sportsontheweb.net/how_do_i_set_up_my_brother_printer_to_scan_to_my_mac.pdf
- http://myluckybet.xyz/bapujulaark5e.pdf
- http://xaraxag.mypressonline.com/94980773191.pdf
- http://lojapidabud.mypressonline.com/war_room_book_author.pdf
- http://jekeluxuto.mywebcommunity.org/25112957299.pdf
- http://mogafowamid.22web.org/29053310778.pdf
- http://vomamafawib.scienceontheweb.net/algebraic_expressions_grade_8.pdf
- http://vudifabofugejij.medianewsonline.com/90323511748.pdf
- http://suwadebizon.mywebcommunity.org/what_do_you_mean_by_kinematics_and_kinetics.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/da00b1a4-2d7d-47c0-8ebd-e39e607da88f/how_to_play_the_board_game.pdf
- http://lenegimuni.epizy.com/16011101167.pdf
- http://kopuperoki.epizy.com/the_unabomber_manifesto_review.pdf
- http://votaveliratelom.epizy.com/disney_intro_piano_sheet_music.pdf
- https://uploads.strikinglycdn.com/files/26467a53-ee53-485f-a605-ad90725df3e5/jijilu.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_off0000eaf7.bin` `28644f294cf64b88f14f090f90c71b36996fbea5629e050ce564e65ecb318a1e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAF7	5260 bytes
`font_01_sfnt_off0000fcc8.bin` `851263c8e728fad0a53ee8cf266c541abc3f26bcc69ad860f13217e303a8989e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCC8	10736 bytes

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