Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94e63b69b6fe741…

MALICIOUS

PDF

79.3 KB Created: 2021-04-10 15:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: bd39c81ed2b31729c013fc869672e5a2 SHA-1: 7760034d768d0c52f296d05c57acfcd8a90e5e38 SHA-256: d94e63b69b6fe74192dfa49b84a3ff0794b212a790ac4d78296317fe69fca336
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a site that appears to be a lure for software installation. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of using disposable hosting for such links, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=install+audacity+in+linux+command+line PDF link annotation
    • http://leririv.sportsontheweb.net/xujuporisoxanuvutaj.pdfIn PDF document text
    • http://sasavojaraw.iblogger.org/93188828146.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/ditudi.pdfIn PDF document text
    • http://varuvoruva.iblogger.org/masters_scholarship_application_letter_sample.pdfIn PDF document text
    • http://dokukuke.mypressonline.com/9472421508.pdfIn PDF document text
    • http://fajamad.mypressonline.com/katolezalotugeso.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
    • https://uploads.strikinglycdn.com/files/b80dca3a-f390-4da2-bd0f-284d02056e62/jokoxoxu.pdfIn PDF document text
    • http://lobexejabavusut.epizy.com/division_of_polynomials_worksheet_with_answers.pdfIn PDF document text
    • http://fojiguxojed.epizy.com/escape_room_level_217_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83cad503-06ec-420d-9d4a-67cd246d5be9/2008_hyundai_sonata_service_manual.pdfIn PDF document text
    • http://xapajegawejarag.epizy.com/nemadodakapega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b081c680-b843-4a9e-9f3d-b141840ab831/what_color_does_red_and_yellow_light_make.pdfIn PDF document text
    • http://wufamibikesiz.epizy.com/iron_maiden_brave_new_world_songbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd608057-fecb-49a7-a9fb-6cec3e30b694/43757234403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2487f3ee-839c-499d-be26-919d6409763a/what_are_the_biblical_principles.pdfIn PDF document text
    • http://fotolen.epizy.com/46984932601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4016d3-d85f-4418-b364-01fe5c18300a/20265642026.pdfIn PDF document text
    • http://xozodijavoxovun.epizy.com/rodney_stark_bearing_false_witness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/277f3fa3-ca50-4f88-b8dc-cf4b3aa2d530/2448385755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb5e511b-2521-4ea7-836c-3b81274bcd1a/muvuvewo.pdfIn PDF document text
    • http://mudasaki.epizy.com/favudijijokimixuzuxan.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_off0000ebd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD6 4976 bytes
SHA-256: 0320418f57dc6f2dadd7aa1f1d42591c9ef96d634a094089b421379a686806ca
font_01_sfnt_off0000fca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA5 10880 bytes
SHA-256: 72d895fe40a37d6944686e31f096b8c6441a1e9c8c476e1b378425daac14ca62
font_02_sfnt_off000121db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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