Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84c252fd105dbe5…

MALICIOUS

PDF

73.9 KB Created: 2021-03-28 16:38:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2aa95d4b25105bff3948bb5830cdbef7 SHA-1: 297bb540537c31948784cfa196522df662e4a24f SHA-256: f84c252fd105dbe50c619143915eaef56f4ee0fb17c00c0da45a36fdf209f9ba
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

The PDF document contains a lure for remote support tools, indicating an attempt to gain unauthorized access to the user's system. The presence of an external URI pointing to a download page for 'candy crush soda saga apk for pc' further suggests a deceptive download attempt. ClamAV detection and ML classification confirm the malicious nature of the file.

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://nipisod.ru/wix?keyword=download+candy+crush+soda+saga+apk+for+pc PDF link annotation
    • https://cdn.sqhk.co/guzowozuk/jvjfymU/rlcraft_guide_minecraft.pdfIn PDF document text
    • http://fewutame.getenjoyment.net/43371945967.pdfIn PDF document text
    • http://kiratemize.22web.org/dakoxemobazabalora.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/fzm9hsu/color_me_happy_salon_dover_de.pdfIn PDF document text
    • http://nugawijuxuv.mywebcommunity.org/tan_application_form_2020_latest.pdfIn PDF document text
    • http://zowogusatutojus.mywebcommunity.org/gesebiwivevibijipavapi.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/que_hacer_si_me_chocan_en_estados_unidos.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/nuselufuzo/guided_tours_of_madrid_spain.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/40984164058.pdfIn PDF document text
    • http://bepapogijarepub.rf.gd/teamviewer_quicksupport_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/android_developer_resume_4_years_experience.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/java_for_windows_10_free.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/the_essential_keto_cookbook_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/fiction_vs_nonfiction_worksheet_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/tom_clancys_ghost_recon_breakpoint_pc_game.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/dracula_bram_stoker_plot.pdfIn PDF document text
    • http://pijedawometuzov.epizy.com/sadorugud.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/87148584073.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_off0000e1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F9 5672 bytes
SHA-256: 6a7cdc07928f3f01a6d8836ad145290dfb878631d4e8af6a57bbcd578e04e5de
font_01_sfnt_off0000f564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF564 10924 bytes
SHA-256: 4b1911a0d253cb400a9b531f9e885769f87307a86b831fd77b6ff48b51abcd27

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