Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4ae5c76ce9ecda…

MALICIOUS

PDF

74.9 KB Created: 2021-04-01 19:37:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e3f80ec882de03f4a33696784c42f12d SHA-1: 4c6e28084173fe6a08a21ac368f0bb356ec8233e SHA-256: 1c4ae5c76ce9ecdacf56fbadc0a112fa48dd3d4b384f83a82cb2da02a80ea309
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically related to phishing. The primary malicious URL identified is botokaw.ru, which is likely used to host or redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/wix?keyword=best+iptv+subscription+aliexpress PDF link annotation
    • http://xogosedo.iblogger.org/how_do_i_get_my_hp_5520_printer_back_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/idPifhi/podcast_radio_musica_castbox.pdfIn PDF document text
    • https://cdn.sqhk.co/nijedesakuj/c8jhha7/rijerowow.pdfIn PDF document text
    • http://giviwopifa.22web.org/povukiwulabo.pdfIn PDF document text
    • http://kutakelipaxeb.22web.org/projeto_alimentao_saudavel_na_escola.pdfIn PDF document text
    • https://cdn.sqhk.co/liwifetil/gctUpFb/41427773026.pdfIn PDF document text
    • http://guviwogorusux.iblogger.org/zitapatubixezobujoxutizen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_8fddf725e2264fc29357892e2c587a90.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2457138b-a38e-4ea0-ac9b-4195fea71131/qu_hacer_en_la_ciudad_de_mxico.pdfIn PDF document text
    • http://vinetewexe.epizy.com/xavubotobukimijem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f79919da-82b8-45e9-8a22-d11950c7705d/27729198355.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/11050103634.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_01319b26155f41dba15b6a477a8592a7.pdf?index=trueIn PDF document text
    • http://wexogavexip.epizy.com/dark_souls_3_dlc_ashes_of_ariandel_secrets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2202092-22a2-4138-8229-0741db4dda21/94334603519.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/kusabonakanejez.pdfIn PDF document text
    • http://mirijevedot.epizy.com/stanford_encyclopedia_of_philosophy_10_volume_set.pdfIn PDF document text
    • http://bufizufidubak.rf.gd/scratch_snake_game_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/football_games_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/jsa_form_template.pdfIn PDF document text
    • https://6e678f60-abc6-404c-883a-cd1729fdffee.filesusr.com/ugd/e4291f_50ca2e4811f443e4b6ff37ba3ab85d54.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/clasificacin_de_nmeros_reales_ejercicios.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DE 5244 bytes
SHA-256: db3ae59de67114608a22f07c9923d479b7ef9771496a5334df3a60311b332a48
font_01_sfnt_off0000f7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C7 11904 bytes
SHA-256: 2d90f4026b3a101ac0022a9bdb78a1179195826fab38cf8f6d215b7de717d2d5

Open this report in the interactive analyzer, or submit your own file for analysis.