PDF malware analysis — malicious · 704475a934bd4536

MALICIOUS

PDF

71.8 KB Created: 2021-04-07 05:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 06308c48add36dfabdee1b6998f1094b SHA-1: 7c9ddec7a7aa864306af9a2dcfeacb00cb9eca5b SHA-256: 704475a934bd4536bbdbbc50f3e1720dc4d7dba5787d01c0ee52878e61a39fdf

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 flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely the primary lure. The document body, though heavily obfuscated, suggests a deceptive pretext related to educational content to encourage user interaction with the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=atoms+and+elements+worksheet+pdf
- https://cdn.sqhk.co/fazejitev/tgh6hj7/18063401605.pdf
- https://cdn.sqhk.co/kobewudojuvo/ig7L5v6/83541691277.pdf
- http://vefuvowew.22web.org/4265656198.pdf
- http://cethq.xyz/5326366172mz7xz.pdf
- http://wijetaz.mypressonline.com/tejetujenuguxedika.pdf
- https://cdn.sqhk.co/doburazax/WggUfii/battlefield_bad_company_2_update_pc.pdf
- https://cdn.sqhk.co/jixuvepabu/fIjeiia/free_download_extreme_car_driving_simulator_for_pc.pdf
- http://gazawadowig.22web.org/85595379431.pdf
- http://zodelem.mygamesonline.org/2287754350.pdf
- https://cdn.sqhk.co/saseponirifa/cqFpgcg/pretend_play_ghost_town_haunted_house_game_unblocked.pdf
- http://simcars.ru/20935582062r7tua.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://rivekutunuji.rf.gd/what_is_the_difference_between_ai_deep_learning_and_machine_learning.pdf
- http://zotitutuxizokox.epizy.com/wutabaxukebuzopukisolapu.pdf
- http://nabunuwo.epizy.com/forma_correcta_apellido_o_apeido.pdf
- https://s3.amazonaws.com/fasudikek/71256904517.pdf
- https://s3.amazonaws.com/mozirolinitaje/after_effect_tutorial_beginner.pdf
- http://tikawemukotuwaw.rf.gd/hemodialysis_catheter_infection.pdf
- https://s3.amazonaws.com/sesafefanulokam/50254022549.pdf
- https://s3.amazonaws.com/fosagoba/school_bus_pass_application_form_qld.pdf
- http://fevovamebabeji.rf.gd/sepse_neonatal_2020.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_off0000dac6.bin` `a915af3642ad75ecb261738bc3a6bf8cc66e4dfc8128d0bcfb2dc230b7a7ac50`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAC6	5424 bytes
`font_01_sfnt_off0000ed1a.bin` `d54799bf393baaf4546855954ada9f5442007eeb4b55b9f0aba4cbfddb20eb71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED1A	10896 bytes

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