Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f541dedf46da78…

MALICIOUS

PDF

88.2 KB Created: 2021-02-25 17:40:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 047d08e9659843bc15829f9a21fade4f SHA-1: 3e62e7826cfad4b4f734245b210502b44cdb270c SHA-256: 98f541dedf46da789e8dad344db6e958e0dafb669f50f5773913aa6bfcc6e53f
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, which is a strong indicator of a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to a game, likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=sword+art+online+fatal+bullet+multiplayer+gameplay
    • http://winoorama.fun/lomubedobiwekigamewuwamitj8a.pdf
    • https://cdn.sqhk.co/nebinefis/EheiaZA/chinese_checkers_game_how_to_play.pdf
    • https://cdn.sqhk.co/nisikevepoxi/hhijbti/nasal_spray_for_congestion_cvs.pdf
    • https://pedigibija.weebly.com/uploads/1/3/1/8/131857049/464a8.pdf
    • https://bukodebavuv.weebly.com/uploads/1/3/4/6/134657655/c8ac0587.pdf
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/kevijubo.pdf
    • https://cdn.sqhk.co/tudosiki/gdNha80/rider_university_athletics_address.pdf
    • https://niritamin.weebly.com/uploads/1/3/4/4/134486676/mezojuragadaro.pdf
    • https://static.s123-cdn-static.com/uploads/4408704/normal_5fe210a9e5eeb.pdf
    • https://cdn-cms.f-static.net/uploads/4487918/normal_60143cc96df09.pdf
    • http://susurrus.space/bokuratepenigewifapajimaf1z6ju.pdf
    • http://mefizilexofe.66ghz.com/cucumber_json_report_schema.pdf
    • https://cdn.sqhk.co/doxelatofon/ibx0wgf/clue_hunter_gloves.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sefabe/bharat_all_songs.pdf
    • https://s3.amazonaws.com/vojapu/vezizaruzekevuxaderu.pdf
    • http://dobejevilorizu.epizy.com/aachen_tourist_map.pdf
    • http://fuzimobikuxuta.epizy.com/free_bossanova_jawa_full_album.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd5a.bin
5f6b3ecadc7e9b8046a3b9db9a98470b3df236d445f898ab348ebf93a9b95d06
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5A 4092 bytes
font_01_sfnt_off00010bc1.bin
bd50a06def5a8d1471332cedf35b93e9e2f188e215d445e086b1f2593f47daab
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC1 5504 bytes
font_02_sfnt_off00011e70.bin
86fe5876955eaa0b365ab6c749d26e7601392faea832fe225b794ca376ae9616
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E70 11276 bytes
font_03_sfnt_off000144dc.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x144DC 4324 bytes