Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0d82c87ce60dea…

MALICIOUS

PDF

75.8 KB Created: 2021-05-10 18:57:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6ef793bfe325b6995d8f0bbb1c40251a SHA-1: b24dafc76a764cd308219aa8a34fc0895f47c160 SHA-256: 9e0d82c87ce60dea5f9578344e6fafd029811f16e1ad3d8bb502b3110cac5fd0
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary focus on directing the user to 'xezojetit.ru'. This URL is presented in a context that suggests a search result for a game ROM, likely a lure to entice clicks. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a large number of links on disposable hosting, further supporting a malicious intent to distribute payloads or phish for information. The ML classifier and ClamAV detection strongly indicate malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=wizardry+6+snes+rom PDF link annotation
    • https://cdn.sqhk.co/wujejelot/gmmRBhg/widiliraxopi.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/g2ggigA/42658669177.pdfIn PDF document text
    • https://cdn.sqhk.co/rowazazapa/sN7gihy/eastside_pet_clinic_tucson_arizona.pdfIn PDF document text
    • https://cdn.sqhk.co/solijisivono/gjWjeLw/lubefig.pdfIn PDF document text
    • https://cdn.sqhk.co/mimizajig/a8Bifgg/mustang_gt500_super_snake_0-_60.pdfIn PDF document text
    • http://powogole.iblogger.org/fokorulukot.pdfIn PDF document text
    • http://mitibazin.22web.org/amalgamation_of_partnership_firms_solved_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/taxosavasesa/isGy9hd/verizon_one_talk_desktop_app.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CsaOhdD/77800013952.pdfIn PDF document text
    • https://cdn.sqhk.co/silakozafi/fhjdyia/zefusodipifirubowap.pdfIn PDF document text
    • http://xukugolipanizo.iblogger.org/budoronipanazobodase.pdfIn PDF document text
    • http://texulateniz.iblogger.org/what_is_quantum_light_healing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tokejavopif.rf.gd/allaitement_mixte_avantages_et_inconvnients.pdfIn PDF document text
    • http://tuvuwase.rf.gd/bionic_hand_project.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/hp_elitebook_folio_9470m_battery_1_not_present.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/drodo_auto_chess_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/232f29b5-0259-495d-ab93-d8e1a9da7fde/bozijod.pdfIn PDF document text
    • http://winuvifenam.epizy.com/convert_to_csv_file_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/28631115617.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f33fcfc-2e10-4e02-8212-1c5edf32bca1/fidiwifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d34ae5-fd87-4bbb-861f-dc033a88793d/85914038866.pdfIn PDF document text
    • http://defurujaligat.epizy.com/kinowupelijanikezalex.pdfIn PDF document text
    • http://zaposupi.epizy.com/tv_broadcasting_script.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD790 4964 bytes
SHA-256: 59aa5c4e8998f9627616b8e51dc38c6f6fb4ae162235f3bd87e729764e2c483b
font_01_sfnt_off0000e861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE861 12856 bytes
SHA-256: 6a1ee398970795b51c14c2d871abde71c675695d33b81ee3b93f649e04d8932a
font_02_sfnt_off00011261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11261 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2