Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb723df1892e627…

MALICIOUS

PDF

72.2 KB Created: 2021-01-28 15:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ab657f2ddd50415fcddea29dac91cfdc SHA-1: f8a0b093d0f6e41758eb831cc3bd498632157d44 SHA-256: cfb723df1892e62769988c44d118c0280634d95101fe32b559c2e7b8121ffa88
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=rizzle%20short%20videos%20wikipedia PDF link annotation
    • http://mybatut.store/rocket_pocket_gun9g0c1.pdfIn PDF document text
    • https://vakenufepuxino.weebly.com/uploads/1/3/4/5/134529081/zirixi_mupakutevedu.pdfIn PDF document text
    • https://vozunekoba.weebly.com/uploads/1/3/4/9/134902797/fafugesezali_gobuvovajolodo_vuzabewe_wabipikitoxenu.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/JhFhhjf/joplin_weather_tonight.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/0ibiggi/retro_game_box_game_console.pdfIn PDF document text
    • https://cdn.sqhk.co/duravukikemo/6zJ9hWX/cookie_cutter_maker_machine.pdfIn PDF document text
    • http://websporizlehd.com/buzebenudiwi2t73.pdfIn PDF document text
    • http://avbox.org/qr_scanner_iphone_53hhtq.pdfIn PDF document text
    • http://electriccannoz.club/xinunugumoled2f9fv.pdfIn PDF document text
    • https://zusikoxapumobib.weebly.com/uploads/1/3/4/7/134766975/jolizaronemokaritu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456114/normal_5ff29c98c5b2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuvojiteziw.epizy.com/boxopefokawoni.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/logesusulofomexafezixur.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/mobifuros.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/vulifunap.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_off0000dd89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD89 5320 bytes
SHA-256: 2d3e7c0d9f3c02825e01fd0fe8e9b09d130880d7b733984488f5283da38ca07b
font_01_sfnt_off0000efb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB9 10576 bytes
SHA-256: ff5d323cad3d2278dc5a3b00dd58ba1ece9c5291db88ded8455175bdde34e9ac