Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6deb6222978ae8…

MALICIOUS

PDF

73.9 KB Created: 2021-02-05 21:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fc69b6993a23c31b5f2a62473d37bc76 SHA-1: fac1f29ac1098e19d394953db4babfbd0e6e4b0a SHA-256: 6e6deb6222978ae8f1ac92670d6aca98626505c9d94ec21859eb1eaae71518c0
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wb?keyword=skype%20%20for%20desktop%20windows%20xp PDF link annotation
    • https://cdn.sqhk.co/dovawowo/dCaieih/luxury_hotels_near_chatsworth_house.pdfIn PDF document text
    • http://geosen.net/subsistence_savegame_editor8mcnr.pdfIn PDF document text
    • https://cdn.sqhk.co/dezosanag/jjhifjc/adventure_escape_murder_inn_walkthrough_guide_chapter_6.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/7efbee.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/akdifie/minexubibojufu.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/hfghrgd/sas_zombie_assault_3_hacked_unlimited_money_apk.pdfIn PDF document text
    • https://danikobunib.weebly.com/uploads/1/3/4/7/134755608/3650174.pdfIn PDF document text
    • https://cdn.sqhk.co/wazofovam/Whia6F3/arcade_hockey_20.pdfIn PDF document text
    • https://bawovaleza.weebly.com/uploads/1/3/2/6/132683088/vuvibexad.pdfIn PDF document text
    • http://pribor-poverka.site/goguvkru43.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/iP5Xgct/loluligibibugabulogimeri.pdfIn PDF document text
    • https://cdn.sqhk.co/makubeku/jisyICR/jiwuzewosuvodu.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/b3Xihjl/14872574702.pdfIn PDF document text
    • https://cdn.sqhk.co/jivumigen/OjfhisK/skip_bo_online_spielen_kostenlos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faloboxodutak.epizy.com/bolero_snare_drum_sheet_music.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_off0000e5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F9 5220 bytes
SHA-256: 620dbe72208175f2cb8f3466704d0a8712621708600d671f653ee7ea4134f6e9
font_01_sfnt_off0000f7f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F6 10184 bytes
SHA-256: 43a6a586972b27608105525c8c97d5b1a9b405c75ac3229fa982b08c2a6c52e0