Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc1b763bd97ba49…

MALICIOUS

PDF

93.0 KB Created: 2021-03-29 16:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5f5acf1f616fe3599ab0633a076b81c6 SHA-1: bf7a7d24d382bba503cd2955a35f0f405cfb83ce SHA-256: edc1b763bd97ba4968496a822a54ca662929a56350fc7e964b69514636370407
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('botokaw.ru') that is likely used for phishing or to host malicious content. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of using disposable hosting for link farms, further suggesting malicious intent. ClamAV detection as 'Pdf.Phishing.Trojan' confirms its malicious nature. No scripts were extracted, but the overall structure and URL analysis point to a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=panasonic+eneloop+charger+manual PDF link annotation
    • http://tokio-2020.fun/yo_robot_pelicula_completa_en_espao119u1.pdfIn PDF document text
    • http://kawlites.online/gerewulebunaxukr0nf.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/86612951487.pdfIn PDF document text
    • http://wugipesirexoxof.mygamesonline.org/arapa_trke_terimler_szl.pdfIn PDF document text
    • http://gooddevice-online.com/72350775875197ch.pdfIn PDF document text
    • http://gramnews.xyz/weekly_meal_planner_freesclhi.pdfIn PDF document text
    • http://ziwewixowele.sportsontheweb.net/pazuwekotosugewugixa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/038ef112-cc11-4cef-ab76-5384b7d197fc/suwetuzazasaxopalenok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/356610be-faf4-41be-8476-e555182f218f/5555927235.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/91434393805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abfcd056-626c-404e-8142-91d3eee3c906/75881435372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f6c099-e2ec-4c66-98ba-faf575610cf8/beatles_sheet_music_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5176cbb-1c2e-4cfa-b321-9be9cf0403c8/carrier_weathermaker_9200_manual_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc034c59-28fc-4a19-9243-e4a06abc2ca5/39671178548.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/moxexigusupa.pdfIn PDF document text
    • http://roporuti.onlinewebshop.net/utilitech_three_outlet_outdoor_timer_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80067479-144c-42e2-b8e5-838e1ed96099/48219101564.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/36382786859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13fa35f8-9c33-4587-ab23-e1c80e749a8b/amcor_portable_air_conditioner_kf9000e_troubleshooting.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.

FilenameKindSourceSize
font_00_sfnt_off00011895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11895 5348 bytes
SHA-256: 3d67b34d6fd281e8c59ffde7f5f7b925757a595c2a4f7f98884105b2729719fe
font_01_sfnt_off00012a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9A 11800 bytes
SHA-256: 8de4b065f78c93916320fdaa7c2c8511814d41775cdce73df69ad033b78921de
font_02_sfnt_off0001517e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1517E 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e