Malicious PDF — malware analysis report

Static analysis result for SHA-256 33792445f4c2fb81…

MALICIOUS

PDF

67.5 KB Created: 2021-02-11 18:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: da5c008f3ef1408feaa9b96eb8371029 SHA-1: 1f47ab49dc35c9bbac83563e3e545694db7ec17e SHA-256: 33792445f4c2fb8139fb2353dc0477d75f371f16c79c7df613256ab3b74a53c1
126 Risk Score

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
  • 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://leonvi.ru/wix?keyword=htc+sms+apk PDF link annotation
    • http://puveduxorapuba.iblogger.org/38554358526.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/xoxanebodidadono.pdfIn PDF document text
    • https://cdn.sqhk.co/sabimejuka/jdiegcf/house_flipper_dlc_ps4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413712/normal_601dad3498833.pdfIn PDF document text
    • https://pimapavidi.weebly.com/uploads/1/3/2/7/132740410/vadomoxupapuxolob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392872/normal_5fe9b35da91c1.pdfIn PDF document text
    • http://wutoxurusot.iblogger.org/setokavof.pdfIn PDF document text
    • https://wilulesutazi.weebly.com/uploads/1/3/3/9/133997377/tipananase-nukeb-putenapedebotex-bukab.pdfIn PDF document text
    • https://gojojiwegojefuw.weebly.com/uploads/1/3/2/6/132695574/puvolas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387817/normal_5febdaa558597.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://potolonufe.epizy.com/hypothyroidism_in_down_syndrome_screening_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/27143087778.pdfIn PDF document text
    • http://moferamobonar.epizy.com/88022290544.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/cheran_pandiyan_movie_songs_free.pdfIn PDF document text
    • http://mojorudo.epizy.com/4636407464.pdfIn PDF document text
    • http://binasizula.rf.gd/spreadsheet_for_apple_free.pdfIn PDF document text
    • http://nabapuxamiluj.epizy.com/bootstrap_navbar_dropdown_hover_template.pdfIn PDF document text
    • http://xujogefup.rf.gd/autocad_2016_keygen_only.pdfIn PDF document text
    • http://negavutagogo.epizy.com/garmin_mapsource_basecamp.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/80602024870.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_off0000c457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC457 4976 bytes
SHA-256: 509448602ccd28db10ea18ef22b71708ca24b8f44c552c0ebec33f03a5186ff3
font_01_sfnt_off0000d537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD537 14260 bytes
SHA-256: 2623a4ff85ba53267b5cec41b34eb3ce4b721b7632df0c195a169a66ae6e5220