Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4da196260e4ef7e…

MALICIOUS

PDF

77.2 KB Created: 2021-03-16 12:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3d154258bafb1e3ce9fffe3ca3f99cd6 SHA-1: 1bf7f85f8077a14fde30a83e883c94519030be7a SHA-256: a4da196260e4ef7e99c7ce6a132d57cebaae9a471b25fdf6a0f18c45b73ac59d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://golowaki.ru/wix?keyword=puzzle+and+dragons+magic+stone+generator.
  • 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=puzzle+and+dragons+magic+stone+generator PDF link annotation
    • http://bafedudovodamo.medianewsonline.com/xatodakuxu.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/hornady_140_gmx_6.5_creedmoor_load_dataawlza.pdfIn PDF document text
    • https://cdn.sqhk.co/lofopapenow/jchj57g/3d_car_wallpaper_full_hd_download_720p.pdfIn PDF document text
    • http://joblanc.xyz/8904097929c9rj.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuwajavi/gKgg7nB/25500992344.pdfIn PDF document text
    • https://cdn.sqhk.co/kevovevude/V8uiagh/12945543791.pdfIn PDF document text
    • http://suvolupijiro.mygamesonline.org/lightning_protection_for_building_design.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/hehfGNI/pc_games_2020_free.pdfIn PDF document text
    • http://sparzha.club/pelovagakimazevizuzerebafie4pk.pdfIn PDF document text
    • https://cdn.sqhk.co/sufiwotag/2jhAjaV/samsung_gallery_missing_photos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/55ceb6db-1933-4548-b3cf-0f0deed8440a/how_to_get_a_free_ti_84_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b00e4eb8-4aed-470b-8653-b82eb633a1a0/japanese_food_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4560c29-2327-41d0-a972-6d61a13351f6/vagobarakorubenuniroxuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/171459dd-f7c7-4c2d-aeea-ad5807f171ad/29654869241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/196e4785-baf7-4e88-bbe5-f39695e474b7/pokemon_sun_and_moon_tv_show_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5682255-4b91-44fe-a3cd-8d4a8a8b9b71/40245590092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f539aa2-93a4-493a-a660-b59a75cd7796/97187869078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02e84412-f93e-4df0-9148-a77c60264992/22593505012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2680697-6dd9-469c-9aad-d590a424a7bf/ruvugirulunobafevoposi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E5 5192 bytes
SHA-256: b7e226a41df1ad4179ea909b1c6f0dd04c3553ceb3eecf1b48a4eff6479a9c66
font_01_sfnt_off0000f373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF373 11188 bytes
SHA-256: c90cbba286ceb388a6ca172f951cf5e0d88e24ec05c1c26dcedc64cea71d84cf
font_02_sfnt_off0001197d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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