Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e9f10727f0b5baf…

MALICIOUS

PDF

81.3 KB Created: 2021-05-01 08:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: dfb533062d4ca854da38955e6d0651f7 SHA-1: 05f348f09a76d9e5b30328175555a2f8a26c5401 SHA-256: 6e9f10727f0b5bafd4c4e833345c6a3ddffe598a6e21f0bf436eeafaf1cb912f
126 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and utilize UTM parameters, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to direct users to a phishing site or download further malware. No scripts were extracted, but the PDF structure and embedded URLs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/strik?utm_term=davinci+resolve+17+tutorial+for+beginners PDF link annotation
    • http://kimisorunutom.medianewsonline.com/nukudilasexofiruduriko.pdfIn PDF document text
    • https://nutomejeti.weebly.com/uploads/1/3/4/7/134702699/7691580.pdfIn PDF document text
    • http://buytoday.cc/10222461868dcz2r.pdfIn PDF document text
    • https://jojapewabivato.weebly.com/uploads/1/3/1/3/131379205/fupowobagisuve.pdfIn PDF document text
    • https://cdn.sqhk.co/bosesegivu/idgdhhK/old_phone_ringtones_app.pdfIn PDF document text
    • http://lomilinixigal.mypressonline.com/alkanes_mcq.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvapolaxaj/Sgc4hhP/bcg_attorney_search_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/moserusoba/g0IegeF/gidikekavavinafanefux.pdfIn PDF document text
    • http://momentshop.space/73710725878y056c.pdfIn PDF document text
    • https://xoxefalumigak.weebly.com/uploads/1/3/4/5/134527234/boxupipizezatex.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/gd4ighh/file_manager_app_for_iphone_5.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • https://rezosegog.weebly.com/uploads/1/3/2/8/132814067/2d57f2571.pdfIn PDF document text
    • http://lnstagramverifycentre.com/lagu_rewrite_the_stars_cover_sterre7g2u7.pdfIn PDF document text
    • http://zeropium.com/fildo_for_windowskijp3.pdfIn PDF document text
    • https://tavutafaj.weebly.com/uploads/1/3/1/4/131482866/ee669faf7b67438.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/jasipefulaxiduj/sexugoxuzoz.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/82500121054.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/weapons_of_math_destruction_summary_chapter_8.pdfIn PDF document text
    • http://lipeporo.onlinewebshop.net/buxuliwepoxuziduletagib.pdfIn PDF document text
    • http://lavisekenesavof.myartsonline.com/nojidokefu.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/republic_by_plato.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_off0000e9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C8 5380 bytes
SHA-256: 75c0d02426d25f30b4ddd2c231349792a5f7e0e1c959ae5e460e3170c48b2201
font_01_sfnt_off0000fc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3C 11360 bytes
SHA-256: bbf3493211f41a1b99b2ca5a63b5c5d72c2485508917881093527327db3590b0
font_02_sfnt_off00012299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12299 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330

Open this report in the interactive analyzer, or submit your own file for analysis.