PDF malware analysis — malicious · f5ee1b036b3b4101

MALICIOUS

PDF

83.2 KB Created: 2021-03-04 23:47:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: 778b89306ed88c9dd0d6398f150c13ef SHA-1: 8e90bb869a01502290219f80de63514777180b7d SHA-256: f5ee1b036b3b41014dbf3753298f89b641d234ac9b8609da0d4268ea8b8af4b9

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to trick users into visiting a malicious site, potentially leading to further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/strik?utm_term=how+to+operate+a+buck+stove+insert PDF link annotation
- https://static.s123-cdn-static.com/uploads/4463262/normal_5fc747250b03e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390071/normal_603537c66fa35.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464530/normal_600a24ff2e393.pdfIn PDF document text
- http://niwadeg.mywebcommunity.org/how_to_open_flash_player_on_chrome.pdfIn PDF document text
- http://julivojurukumu.sportsontheweb.net/the_sims_3_generation_serial_key.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369164/normal_5fe3f8de827b3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393647/normal_5fdf5d5d241c8.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://eff7b67d-fef5-45b7-bcd6-ffb1b71d3a14.filesusr.com/ugd/b4c9df_6493e2aa14df4691950e562da39ea347.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zulezov/bermuda_triangle_movie_2014_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a488d4f5-bb33-43ac-97dc-6d5ca8c2bcd0/essick_air_humidifier_filters_1040.pdfIn PDF document text
- https://s3.amazonaws.com/waxegatulo/35634083176.pdfIn PDF document text
- https://1416a32c-f91c-4ec3-9c10-bfdf610c7df7.filesusr.com/ugd/76de1a_c8c11611a06f4f1e9bee08453ce3d12d.pdf?index=trueIn PDF document text
- https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_d3d204908e8c42dab8c0431b61970846.pdf?index=trueIn PDF document text
- https://edefa294-c65c-46c5-840b-8a4669b9fdfe.filesusr.com/ugd/e4a001_5965d5167ac94b369abd4601be645813.pdf?index=trueIn PDF document text
- http://resilasijajatil.myartsonline.com/what_is_the_difference_between_graco_x7_and_lts_17.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8f1d529b-0587-4a85-85e5-4de9edb8b0ff/pcir_reproducible_answer_key_world_history_shorts_2.pdfIn PDF document text
- https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_58569629369249b18ee4c1d7c8ccea9e.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/69227013-3e3a-4920-8405-d9e1b7eb4e99/hp_consumer_desktop_pc_bios_update_rom_family_ssid_82f2.pdfIn PDF document text
- https://s3.amazonaws.com/tujeviwakirawu/wahl_clipper_corp_stock_ticker.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8fb2b074-cd1b-4b33-9925-5753b0499951/50548526228.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f4790524-f612-45e0-8f8b-31b5190d7754/71452007082.pdfIn PDF document text
- https://s3.amazonaws.com/bezorito/mawurojimokalefegemako.pdfIn PDF document text
- https://s3.amazonaws.com/fopalew/what_are_the_roles_and_responsibilities_of_a_barista.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/39666bc5-8f2a-443e-9cd0-39f8934faddc/5_love_languages_list_test.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000edd7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDD7	5212 bytes
SHA-256: `f1cf1b4e52812bee94635cf4d3e7ca2b03182a7343e41e3b6e802d7c17bcffbd`
`font_01_sfnt_off0000ffb1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFB1	11812 bytes
SHA-256: `2ce7c1ce90109dc6494d305087ac4a158b6aec3ea4c3e4fe9efd8165cc6dfec3`
`font_02_sfnt_off00012658.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12658	17004 bytes
SHA-256: `73f809b6ebaa3bbf248a17f6dc49f88431b5cd2d0ebc59d4f765ea8281060ac9`

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