PDF malware analysis — malicious · 75812626e4bfee1d

MALICIOUS

PDF

82.4 KB Created: 2021-03-09 18:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7664c8fb2f02515a30b1f5661d39e72d SHA-1: 16f09f0ce942e25e9b04f6f8d4c5d73355150c8b SHA-256: 75812626e4bfee1dca490a52cc12b83bd4e91375a4a4d022df7522b5be2e4adf

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 critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, 'https://kuzutuzo.ru/strik?utm_term=why+is+the+brush+not+spinning+on+my+shark+vacuum', suggests a phishing lure related to a common household issue. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs point towards a phishing or credential harvesting attempt.

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://kuzutuzo.ru/strik?utm_term=why+is+the+brush+not+spinning+on+my+shark+vacuum
- http://choosenews.space/cause_and_effect_worksheets_grade_6x3xre.pdf
- https://cdn-cms.f-static.net/uploads/4485012/normal_6035d8c29a30d.pdf
- https://dinowupeguf.weebly.com/uploads/1/3/1/3/131379410/wagokozupuder-bomibas-mumupojajif.pdf
- https://cdn-cms.f-static.net/uploads/4462073/normal_6035ec93b67f8.pdf
- http://onlajn-kassa.ru/gofikovafexiji7ysqk.pdf
- https://cdn-cms.f-static.net/uploads/4488332/normal_5fd9658fd3e84.pdf
- https://cdn.sqhk.co/kekelivig/qjCGChd/study_skills_activities_for_elementary_students.pdf
- http://zhigina.ru/8565348234wj26r.pdf
- https://gozaxuvo.weebly.com/uploads/1/3/4/6/134612917/05051d5b6f0610a.pdf
- http://fit-italy.space/basotho_clansqeaze.pdf
- https://pefeduvoxonix.weebly.com/uploads/1/3/4/0/134017609/xivokijopurozixu.pdf
- http://salonapp.xyz/33720904266zcos4.pdf
- https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/606750.pdf
- http://kino-vezde.ru/flipper_pinball_pool_gottliebbs51w.pdf
- http://easycreditscore.info/wejerafedi4ow2u.pdf
- https://pelabinal.weebly.com/uploads/1/3/1/3/131379552/vifiw-podebu.pdf
- https://cdn.sqhk.co/perikowep/djgjico/xurepegojamupowaduxil.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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_off000106a9.bin` `3521b37d4b273cddc04465b0633f9eb8dd96fcef35d2dd5cfd90e6c5b468f1bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x106A9	5696 bytes
`font_01_sfnt_off000119f8.bin` `46cf3d03c847f1c9b954b5c99552f7eafd4de8a75aa2ad472a1a5c14782ca844`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x119F8	10032 bytes

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