Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d58fdb36879cb44…

MALICIOUS

PDF

78.9 KB Created: 2021-01-22 22:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 46cb8b3936b87244be881d7e57684e0c SHA-1: 549f69f20c959254a5fd23c45b8aa83ad482296d SHA-256: 1d58fdb36879cb44bc85abd1a61085774babdde00bd4b2c3d2c907182b234824
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?utm_term=pearson+active+learn+answers+spanish PDF link annotation
    • https://cdn.sqhk.co/pogezasamu/d39Uiga/lost_in_harmony_soundtrack_download_mp3.pdfIn PDF document text
    • https://site-1178850.mozfiles.com/files/1178850/rifajo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409806/normal_5ff2d545c60be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467910/normal_60081d01979bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403539/normal_5fee97a21fd28.pdfIn PDF document text
    • https://site-1233233.mozfiles.com/files/1233233/smart_meters_saudi_electricity_company.pdfIn PDF document text
    • https://site-1172884.mozfiles.com/files/1172884/43269654521.pdfIn PDF document text
    • https://site-1166645.mozfiles.com/files/1166645/motorsport_manager_mobile_3_apk_ios.pdfIn PDF document text
    • https://site-1178683.mozfiles.com/files/1178683/pokemon_tcgo_promo_codes_2019.pdfIn PDF document text
    • https://site-1180367.mozfiles.com/files/1180367/keziwov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482426/normal_5fe7e7f1f039b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379054/normal_5fcbf644bdf49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wefadep/chal_utth_bandeya_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/free_email_list_2018_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/mepebadabufe.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_off0000f864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF864 5172 bytes
SHA-256: 5384dced5236e3839f930d30d10907983bcbcc6fe36892d8ab3bd19cc5c5b702
font_01_sfnt_off00010a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A07 10728 bytes
SHA-256: adfa79c5c5d6ad4f36f358ad738ba66ceac5ddf043f7933ab8889247190a0741