Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fbf84e041291eb9…

MALICIOUS

PDF

71.8 KB Created: 2021-02-12 10:12:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: de0ff447418b12e4dda7c3cbe6019483 SHA-1: 9132c813a2689d0ca19ceba64e13d075cba79cde SHA-256: 7fbf84e041291eb95a241d24c9c1615100e0f7e74871d2afd16e216fb54d072c
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=super+mario+odyssey+wallpaper In PDF document text
    • https://cdn-cms.f-static.net/uploads/4420431/normal_5fdc4d462a43b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454051/normal_5ff925fc2b9e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450640/normal_5fd34d7de5815.pdfIn PDF document text
    • http://tevajevidiwa.22web.org/kumikufulivipid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410431/normal_5ffcd5af2a920.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471941/normal_5fcd13f5245b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451970/normal_6015a4fd4433a.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/pulavokaxe/momefinotesatukilejujera.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/1289638526.pdfIn PDF document text
    • http://romezegipoxo.epizy.com/cross_country_flight_planning_worksheet.pdfIn PDF document text
    • http://rapozafetod.epizy.com/chamma_chamma_new_hd_video_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/avatharam_video_songs_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/alphabet_practice_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/bevegep.pdfIn PDF document text
    • http://ruzuzis.rf.gd/71958436895.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/winivafidevoruputu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FD 5400 bytes
SHA-256: 733a07b37c13c436f187c6962646a76282b24e1251c46870c6b944acef117192
font_01_sfnt_off0000d955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD955 10400 bytes
SHA-256: 357c05b3520661842099c134ead4d464564fef921e78d37986dca203aae66eeb
font_02_sfnt_off0000fcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDF 16164 bytes
SHA-256: f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd

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