PDF malware analysis — malicious · b3e66a72b24152ca

MALICIOUS

PDF

81.1 KB Created: 2021-06-11 22:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 755b444067e17eeef20e5ba43a019f49 SHA-1: e3dd48a35c0ab76df0fe75d64bac6f87f00b91e3 SHA-256: b3e66a72b24152ca90768de41f1392a4ddbe5e551992fce355e1264655b01b1a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'drafthe.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'free keys in subway surfers', suggesting a lure to entice users to click the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://drafthe.ru/pbw?utm_term=free+keys+in+subway+surfers
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/147cd2ba-744a-4fce-94fc-cd25147eef16/landforms_worksheets_grade_5.pdf
- http://gazumadu.pbworks.com/w/file/fetch/144473064/diccionario_de_derecho_rafael_de_pina_vara_porra.pdf
- https://uploads.strikinglycdn.com/files/1968ba4f-6bd2-4492-84ee-e682600f609e/modelos_de_caratulas_en_word_para_editar_gratis_doc.pdf
- https://uploads.strikinglycdn.com/files/1ce9d9ac-63b8-4f92-b015-8bb26578d411/74930615481.pdf
- https://uploads.strikinglycdn.com/files/45332e21-5c23-4616-815f-117f9684db26/kupemukerozoxodimitamew.pdf
- https://uploads.strikinglycdn.com/files/b6e76756-0260-41dd-8588-be077a712e84/act_book_online_free.pdf
- https://uploads.strikinglycdn.com/files/dc420c86-fc5c-4c13-84b1-880d349f9ec8/soda_stream_flavors_target.pdf
- http://kefimazusob.pbworks.com/w/file/fetch/144424968/diferencia_de_contabilidad_administrativa_financiera_y_fiscal.pdf
- https://uploads.strikinglycdn.com/files/653c4852-af5d-4b22-8d86-d36581216867/vivepixizizunoje.pdf
- https://uploads.strikinglycdn.com/files/da320dee-c28c-43de-bb97-6d44c5185193/26504290323.pdf
- https://uploads.strikinglycdn.com/files/f8bcb5c8-710b-4d0f-9920-92e032614799/46720359206.pdf
- https://uploads.strikinglycdn.com/files/ffd749ae-2088-44be-8e86-24ab23a24004/napogomepoguratilixuledop.pdf
- https://uploads.strikinglycdn.com/files/add52dff-47e4-44d6-b834-e5a0714125d7/maus_tank_images.pdf
- https://uploads.strikinglycdn.com/files/644b88a0-546f-47df-959b-7010735cbab8/doll_houses_for_sale_at_target.pdf
- https://uploads.strikinglycdn.com/files/eaccc93e-e7ee-4951-aec6-00c9747e4026/ultratech_im-1270_datasheet.pdf
- http://jobojifitin.pbworks.com/w/file/fetch/144451860/tobulojujatovanuxusir.pdf
- http://vimadutukad.pbworks.com/w/file/fetch/145079994/notewanigudaripuludawor.pdf
- https://uploads.strikinglycdn.com/files/53b6e470-88b3-483d-8f70-7a39baeb4b44/83435229168.pdf
- https://uploads.strikinglycdn.com/files/011ec7d5-6869-4ead-ad46-9c3f5b52ddd8/xujefezugotu.pdf
- https://uploads.strikinglycdn.com/files/9f792dda-2b49-40a0-9fb4-489900195703/63926924351.pdf
- https://uploads.strikinglycdn.com/files/c6a232e6-0daf-47e2-8f0d-4111d2dbd2e3/tawoxusukevefabepifo.pdf
- https://uploads.strikinglycdn.com/files/5701ca3c-cfd6-416b-a2bf-31aa1b20f7af/kavizumulef.pdf
- https://uploads.strikinglycdn.com/files/0b8d374b-d8f7-4c5f-9e65-db4422cb50ba/cold_war_worksheets_middle_school.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f255.bin` `82933df7b6bd45836febce920075c5bf251a39374a5990d721163c2929db728c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF255	5084 bytes
`font_01_sfnt_off000103ca.bin` `eca5340c46f44229035e3031c9e7a69c9dbcf1d973afb8ac0318da0fb79ddce7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103CA	4856 bytes
`font_02_sfnt_off000110f5.bin` `d0e54554242304da3c2564d1010ec9766e6943672639fd0b46a3041cf07e3883`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110F5	10928 bytes

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