PDF malware analysis — malicious · 1aa748a4ff752dd1

MALICIOUS

PDF

77.1 KB Created: 2021-03-04 00:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 66e58a29cba1d32892af6bb713488c88 SHA-1: fe1f11d7526c1dd02a41d51b0ab3085a630015e5 SHA-256: 1aa748a4ff752dd1436b8ce188ff9784fcdecd9bdd61d7d205b2b0249e0eef42

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/wix?keyword=algebra+2+sequences+and+series+unit+arithmetic+sequences+worksheet+1+answer+key PDF link annotation
- http://wunawuwome.22web.org/cfop_f2l_algorithms.pdfIn PDF document text
- https://cdn.sqhk.co/rapowipijes/aNehdH0/39309383732.pdfIn PDF document text
- https://cdn.sqhk.co/sajunabinume/rggiQaR/xopegenobonofuzukutejovu.pdfIn PDF document text
- https://cdn.sqhk.co/wepugozotap/jjhhchg/90225298764.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375344/normal_602a01ae50a3a.pdfIn PDF document text
- http://nanonewe.scienceontheweb.net/soredugirupolibumepoxuzu.pdfIn PDF document text
- https://cdn.sqhk.co/mulepava/V3IOgig/ganoniboxet.pdfIn PDF document text
- https://cdn.sqhk.co/molivovuki/jfS3Zhj/72987344785.pdfIn PDF document text
- https://cdn.sqhk.co/pemanunid/YkSO7lW/5637993398.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://xunevonobi.epizy.com/kawimonadarifakatikudi.pdfIn PDF document text
- https://s3.amazonaws.com/pafiganovavi/dejajuzuvivixuj.pdfIn PDF document text
- https://s3.amazonaws.com/tometubufimopim/after_effects_cc_2018_keyboard_shortcuts.pdfIn PDF document text
- https://s3.amazonaws.com/kufazete/30_day_arm_workout.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ecb6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECB6	6052 bytes
SHA-256: `7e3d33deda6138778e4f5134c17656bb73516ec1b6240161117293dad82101ab`
`font_01_sfnt_off00010132.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10132	11012 bytes
SHA-256: `f0a1f59475ebaecc14678d8f370c66b0bdd7584deea461b97ccda6a7929d7b0c`

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