Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8ef6c13b242729…

MALICIOUS

PDF

75.7 KB Created: 2021-03-10 17:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b307accd0db5074f49f6ca5aa54e1c54 SHA-1: d04317806ae8f0bac7e55603cd0cacad0d1036bd SHA-256: 0b8ef6c13b242729cd939ff1c199f40a3b741d5b34deaf1bed09d869cebe02df
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a search result for technical information. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL points to a suspicious domain, suggesting it is used to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://zajinet.ru/aws?utm_term=how+to+reset+rain+bird+sprinkler+system
    • https://cdn.sqhk.co/nikajovefer/15XMwie/tutazulaga.pdf
    • https://cdn.sqhk.co/fololekumi/fvifghs/sudupubuwobawudefili.pdf
    • https://cdn.sqhk.co/xupodafib/ghhjevI/23811481942.pdf
    • https://cdn.sqhk.co/zapajugadira/d5hi7Hr/island_villa_apartments_corpus_christi_reviews.pdf
    • https://cdn.sqhk.co/zolilobup/cheYOgN/74935667995.pdf
    • http://zeropium.com/89201929989ep9yb.pdf
    • http://dostafood.xyz/80801162487o4yhf.pdf
    • https://cdn.sqhk.co/gizetinediz/jgjbmbs/smash_allegations_list.pdf
    • https://cdn.sqhk.co/kutajanode/e1iibge/26341241066.pdf
    • https://cdn.sqhk.co/daxerarugak/UhhcjcY/41815963189.pdf
    • https://cdn.sqhk.co/vovewotutal/4qE48BR/dodogunitategulugezu.pdf
    • http://totalcreditreport.info/how_many_calories_in_one_wendys_fries33zy8.pdf
    • https://cdn.sqhk.co/vibebexez/ejaSeic/rock_out_emoji.pdf
    • http://biomaniix.website/home_recording_for_musicians_for_dummies_download1jwfy.pdf
    • https://cdn.sqhk.co/bovefonot/imhgn9H/mythware_classroom_management_software_free_download.pdf
    • http://job-finder.space/pokemon_go_jolteon_raid_guidevfk7a.pdf
    • https://cdn.sqhk.co/lojadisexudo/bhe4Qja/mobufabonifexodim.pdf
    • http://podarokinsta365.site/wahl_clipper_blade_sharpening_ukcp9gh.pdf
    • http://fakaripeti.xyz/a_christmas_carol_movie_1951_watchztc8e.pdf
    • http://student-yurist.ru/25963941587d16z1.pdf
    • https://cdn.sqhk.co/naliwanik/bggdzNn/futufadutuvapa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/de9b23c5-82f1-49fe-b1e6-6e4b137c844f/lady_of_the_lake_movie_2018.pdf
    • https://uploads.strikinglycdn.com/files/61837476-1eb3-4063-9bff-b0824c49b338/harrisons_principles_of_internal_medicine_test_bank.pdf
    • https://uploads.strikinglycdn.com/files/d18b7d1f-68b8-4a25-8914-c35c922ff393/chemistry_live_workbook_solutions_chapter_15.pdf
    • https://uploads.strikinglycdn.com/files/34fb555a-e593-4b99-a6d4-90a6d6a95139/15747914659.pdf
    • https://uploads.strikinglycdn.com/files/40093c95-41c4-4b59-8995-7cecf84a9aff/53546549570.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_off0000eb84.bin
b6a2eda39bb9dc2ec01a985a79d0a4d2d418ad214524cb2fc2cf5793977c9eba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB84 5464 bytes
font_01_sfnt_off0000fe15.bin
e0d8e17496acad1ab5cffabe318207dfba8594153cb631e93dcfe43b0b2e9ce2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE15 10248 bytes

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