PDF malware analysis — malicious · 59a1a94a00e61dda

MALICIOUS

PDF

87.2 KB Created: 2021-03-17 13:20:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4f695a90241fbe24e81c231df1e48745 SHA-1: 08543088421654e68d6c3bddb7ecfdfa00c36ae7 SHA-256: 59a1a94a00e61dda541d732d587a3894a189e20a691cb9162f841d4f5fb5ed3d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It contains embedded URLs that lead to suspicious domains, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to 'music theory for dummies cheat sheet pdf', aiming to trick users into clicking the malicious links.

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://xezojetit.ru/strik?utm_term=music+theory+for+dummies+cheat+sheet+pdf
- http://4d-5d.com/61567687312ce34l.pdf
- https://cdn.sqhk.co/kobadaxo/7hhZif0/groupme_login_help.pdf
- https://cdn.sqhk.co/bivatesiromu/hfBGY8x/nonazix.pdf
- http://shtangelkipokupkiitd.online/auto_chess_apk_pczaisx.pdf
- https://cdn.sqhk.co/busanurutar/SKja2hf/bending_emt_conduit.pdf
- http://bestrongbyg.com/terminating_employment_letter_template2cv8o.pdf
- http://vefavirona.22web.org/conrad_koh_samui_trip_report.pdf
- http://nubolutlion.xyz/epic_emr_user_manualijywj.pdf
- http://winnerslm.space/funny_images_for_whatsapp_status_in_englishne1cj.pdf
- https://cdn.sqhk.co/karadirimose/nicSx0Z/32628267461.pdf
- http://meetsucre.pro/xewinebisirokobujegag7ovr2.pdf
- http://idealica-italy.site/gsap_tutorial7861z.pdf
- http://minomesiguziv.22web.org/diretalapememijupezo.pdf
- http://bulenamoj.22web.org/tavobetixokilurepexog.pdf
- https://cdn.sqhk.co/dutaxato/ibkgd64/lajanoruwewukivi.pdf
- http://businesslinecenter.com/30510886825hk01f.pdf
- https://cdn.sqhk.co/zolilobup/g7tzgc7/fruit_smash_starbucks.pdf
- http://com-connexion.xyz/58922129463mwkjc.pdf
- http://favanitum.iblogger.org/lexunazisukovetilevodokid.pdf
- https://cdn.sqhk.co/wiwokosokif/agghigh/3176699238.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/kodipopujufipig/fikutix.pdf
- https://s3.amazonaws.com/genedesowul/kutadida.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_off00011433.bin` `541ef80bb7848c974d1e1d7ee85a64569adac174d51277c3a4227e869876f47c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11433	5472 bytes
`font_01_sfnt_off000126b2.bin` `c51dcf1e03de2723e082290893bd6dd7d64bdbfda547d5c94105f688a915258e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126B2	11996 bytes

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