Malicious PDF — malware analysis report

Static analysis result for SHA-256 436fffd0f9272119…

MALICIOUS

PDF

72.5 KB Created: 2021-02-22 00:44:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 691f897b78ab0b7a98983c5138337254 SHA-1: 5a656ee77463c86b0f38e878c2e7f5203b6e6328 SHA-256: 436fffd0f92721194c3571d979b8f1610f9c274ff37aa577bff8d111abdd6023
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://druttle.ru/wix?keyword=josh+owens+oregon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369498/normal_601d50008498f.pdfIn PDF document text
    • http://kejadejaw.iblogger.org/hp_photosmart_5520_printing_ink.pdfIn PDF document text
    • http://on24-system.club/pokemon_white_2_nuzlocke_tips8aq7m.pdfIn PDF document text
    • http://letxxnx.org/how_to_reset_dimplex_fireplace_remote1xw9i.pdfIn PDF document text
    • https://zojegidaluvimov.weebly.com/uploads/1/3/4/1/134109086/bfb589f397e1a.pdfIn PDF document text
    • http://chambreapp.xyz/titikibazenosujamatulogiz277ys.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383304/normal_5fc99c9d711c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371800/normal_5fef849c1c3d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477916/normal_5ff3aebc411a5.pdfIn PDF document text
    • https://nifevokore.weebly.com/uploads/1/3/1/4/131437532/25624.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380867/normal_5fc6c8ea720ae.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/sinadi/95274684987.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/camsurf_ban_remove_android.pdfIn PDF document text
    • http://wusumuforibit.epizy.com/ruger_sr22_front_sight_upgrade.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/goku_vs_android_20_full_fight.pdfIn PDF document text
    • http://zorogeloma.epizy.com/habibi_i_love_you_song_pagalworld.pdfIn PDF document text
    • http://voxinuxo.epizy.com/photo_editing_background_image.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_off0000d405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD405 4784 bytes
SHA-256: 5567ab864a75da1f4032925c304d148296dbd0fa387c1ea93da7f128b9b5f24b
font_01_sfnt_off0000e457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE457 14904 bytes
SHA-256: 699f1069615959f9a5a4ed0868e98fbe3d9bdefce4b561241e51916bbba43861