Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de5a5ef2b861656…

MALICIOUS

PDF

72.6 KB Created: 2021-04-04 19:38:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f32c3c6be8b3b57be4ecba9bfa67e3a5 SHA-1: b6e50f0031caa6f1b312b4074066b0546159f03f SHA-256: 5de5a5ef2b86165649d6abb2a99627ef34cb6f53bb039dc98afee4623ad51722
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an external URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Jostens cap and gown coupons 2020', aligning with a phishing or scam attempt.

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://golowaki.ru/wix?keyword=jostens+cap+and+gown+coupons+2020
    • http://gejokakop.mygamesonline.org/where_is_the_reset_button_on_the_logitech_k520_keyboard.pdf
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/7189396.pdf
    • http://mirijesuwakug.sportsontheweb.net/twilight_life_and_death_download_free.pdf
    • https://cdn.sqhk.co/kufagilan/iNwgdlr/62999593523.pdf
    • https://cdn.sqhk.co/wukufazujuv/odBNXia/evolution_board_game_strategy.pdf
    • http://kusafomidufe.mywebcommunity.org/71950889482.pdf
    • https://cdn.sqhk.co/kafevinuva/ggihSgi/50604360195.pdf
    • http://nopotaz.medianewsonline.com/12938764269.pdf
    • https://cdn.sqhk.co/sivefuxonix/diaajcs/mini_world_block_art_skins.pdf
    • https://ligiponofejejo.weebly.com/uploads/1/3/4/3/134346234/nepogofapi_tadowagug_wimofemekowetit.pdf
    • https://nolaxefipox.weebly.com/uploads/1/3/4/7/134740184/lapajipatu.pdf
    • https://soruxepamoni.weebly.com/uploads/1/3/5/9/135992355/povuxudo.pdf
    • https://cdn.sqhk.co/moxelutedoje/3QAhjje/26633510302.pdf
    • https://cdn.sqhk.co/jevamivuvugi/aiaiaig/beautiful_scenic_wallpapers_for_android.pdf
    • https://cdn.sqhk.co/fiseguvugele/egigfii/17635082042.pdf
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/7778250.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jobavo/awas_yojana_form_gujarat.pdf
    • https://uploads.strikinglycdn.com/files/0ecb0f6a-c61e-4c0a-8024-07966d6eda94/samsung_hw-hm45c_software_update.pdf
    • https://s3.amazonaws.com/numunenoji/vmware_workstation_12.pdf
    • http://samesesodore.onlinewebshop.net/rimotisatemosasu.pdf
    • https://s3.amazonaws.com/luborinizu/caracteristicas_de_los_derechos_humanos_universales_ejemplos.pdf
    • https://s3.amazonaws.com/nilafafakem/narasimha_songs_tamil.pdf
    • https://s3.amazonaws.com/lulelepese/cantell_school_southampton_uniform.pdf
    • https://uploads.strikinglycdn.com/files/c5a78484-bad2-4336-8f7d-50c1cb8b7a2b/explain_how_global_warming_might_affect_polar_bears_penguins_and_mosquitoes.pdf
    • https://uploads.strikinglycdn.com/files/3f284f91-7dd0-406a-be94-156f84e42f87/filipe.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.

FilenameKindSourceSize
font_00_sfnt_off0000deac.bin
af1b448f8bff964a0ba647294d6cf2a7bd84d8c9d4d10bff84e88d753717aec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAC 5468 bytes
font_01_sfnt_off0000f16e.bin
6e82ab3e63cc441e75949dde9f2aafaa32b0fa7a35bd1b338f6f14eaf735d898		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF16E 10448 bytes

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