Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01c1b7fc5cb6f31…

MALICIOUS

PDF

64.1 KB Created: 2021-01-19 15:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1818a91a0e968351c74fb4a1b07b2d92 SHA-1: 4be3443caf42bef21975fa5103229971c3a4e46e SHA-256: e01c1b7fc5cb6f3153a90c0205315026906cbb35cc865156c2c45c057f594589
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wb?keyword=knight%20archer%20saskatoon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f8a3321bd570.pdfIn PDF document text
    • https://site-1240080.mozfiles.com/files/1240080/bodyguard_movie_song_pagalworld__com.pdfIn PDF document text
    • https://fanunidepaz.weebly.com/uploads/1/3/4/4/134474969/8bf7cd8ec47a751.pdfIn PDF document text
    • https://cdn.sqhk.co/zadorari/fhfifii/88220859479.pdfIn PDF document text
    • https://cdn.sqhk.co/telupiza/Yamgehj/27549621722.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448991/normal_5fa64cc284ffe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410722/normal_5fc40ba1e3241.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448121/normal_5fdd414172fd0.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/L0jgTW4/movielogy_movie_trivia_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403120/normal_5fd61b39a73b9.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/tuxexi/drastic_ds_emulator_compatibility.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/54647300345.pdfIn PDF document text
    • http://kasanuvuwa.epizy.com/73947441958.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/24549332469.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/atomic_absorption_spectroscopy_experiment_report.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_off0000c18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC18E 5060 bytes
SHA-256: 86dbcd35a26627e5fcc28ebd08c3687b085c9cc6b0825e387cdb71fd223e0ec9
font_01_sfnt_off0000d2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C5 9720 bytes
SHA-256: 16774aba256e8ec4340f51bc1f8d39a723587d7899890d3556708ff7119996bd