Malicious PDF — malware analysis report

Static analysis result for SHA-256 89de2fdc92752730…

MALICIOUS

PDF

99.9 KB Created: 2021-03-21 01:22:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 007811efda7409d07b0da6b077e2e45d SHA-1: 449c75a99e696df2aa05e11b60d23e7f7c51992c SHA-256: 89de2fdc92752730f82bde7152fa1794c06b12b8f7043cd0ed01525eebd8708a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that mimics a search query, likely intended to trick the user into visiting a malicious site. ClamAV and ML classifiers also flagged this file as malicious, indicating a high probability of phishing or malware distribution. No scripts were extracted, but the presence of external URIs suggests a potential download or redirection to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/wix?keyword=1.2+puzzle+time+answers+geometry
    • https://cdn-cms.f-static.net/uploads/4418762/normal_6034dbbca894d.pdf
    • http://siwupojotuj.getenjoyment.net/calendario_escolar_primaria_2020_madrid.pdf
    • https://cdn-cms.f-static.net/uploads/4410965/normal_604e1701793d8.pdf
    • http://jadogaxarabu.mygamesonline.org/fenimowol.pdf
    • http://aicberg.net/817832421037xbqp.pdf
    • https://cdn-cms.f-static.net/uploads/4490252/normal_60225ec287cc2.pdf
    • http://juwupexutaval.mywebcommunity.org/bazijuwefupu.pdf
    • https://static.s123-cdn-static.com/uploads/4410431/normal_5fcb2f6656775.pdf
    • https://cdn.sqhk.co/wosepimi/igfIRON/40916789000.pdf
    • http://mitatizizuje.mypressonline.com/jiporewafozute.pdf
    • https://cdn.sqhk.co/bevibubos/5jjtGie/best_windows_emulator_app_for_android.pdf
    • http://opendouche.xyz/125575591701nzfr.pdf
    • https://cdn.sqhk.co/jogepirar/ggghb67/44800702343.pdf
    • http://kudusakepupa.sportsontheweb.net/what_does_yellow_say_about_your_personality.pdf
    • http://itsnat.space/how_to_write_a_scientific_paper_bookgoc2f.pdf
    • http://legko.travel/math_by_myself_kindergartenrgeib.pdf
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5fe793f07d288.pdf
    • https://static.s123-cdn-static.com/uploads/4468267/normal_5fcf8bf032300.pdf
    • http://p-kavkaza.ru/how_to_give_the_best_speech_or_presentation_in_english9psbt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wororezijetixa.atwebpages.com/como_hacer_un_analisis_financiero.pdf
    • http://vilumepidiwego.myartsonline.com/hampton_bay_remote_control_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f049.bin
dedf9747e0f46c70906295de825f18f824af6dc68d669363a2ee935d7a1ac88b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF049 28660 bytes
font_01_sfnt_off0001498b.bin
28877c613df2cb1c4d601d32b05a27b40dd67d86703ae17a4bebdfd46c844907
pdf-font-stream PDF embedded font (sfnt) at offset 0x1498B 5504 bytes
font_02_sfnt_off00015c61.bin
b2988aa87ba2b9d9f601a75125bb06c530904d4870a5f93c0af83ad57f654c23
pdf-font-stream PDF embedded font (sfnt) at offset 0x15C61 10276 bytes