Malicious PDF — malware analysis report

Static analysis result for SHA-256 42493bb360b7485e…

MALICIOUS

PDF

71.9 KB Created: 2021-04-14 12:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 084485319594d1ff5edaf7564f067a6e SHA-1: 28c3bfff3ea0c4f5ba5f722e5151cd91324aad63 SHA-256: 42493bb360b7485e5653be391a934030bd39ff2a0e9d75151150e4de49801d99
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam attempt. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the structure and URL patterns are consistent with malicious PDFs designed to redirect users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/strik?utm_term=how+to+locate+adobe+serial+number PDF link annotation
    • http://cybety.xyz/can_you_replace_a_remote_control_for_a_tv84uiv.pdfIn PDF document text
    • http://jerugujekema.getenjoyment.net/96181745900.pdfIn PDF document text
    • http://sexekovowo.iblogger.org/how_to_deal_with_emotionally_unavailable_mother.pdfIn PDF document text
    • http://anarchymedya.com/3220661402911gn1.pdfIn PDF document text
    • https://buvizififu.weebly.com/uploads/1/3/4/5/134591267/303ba.pdfIn PDF document text
    • http://zesaguzijor.mypressonline.com/aprilaire_humidifier_800.pdfIn PDF document text
    • http://astropsychology.website/2013_audi_a7_owners_manualbrz3n.pdfIn PDF document text
    • http://rapalafipotofuw.iblogger.org/functions_and_objectives_of_human_resource_management.pdfIn PDF document text
    • http://furniture21.online/paneduvilupoat9.pdfIn PDF document text
    • http://sabovibin.medianewsonline.com/pulezopefolojofivatura.pdfIn PDF document text
    • https://vowizata.weebly.com/uploads/1/3/1/8/131856430/1766809.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/one_touch_ultra_2_battery_instructions.pdfIn PDF document text
    • http://xapiduxirob.mywebcommunity.org/allusions_in_frankenstein.pdfIn PDF document text
    • http://nuwefug.22web.org/zoruwobupomepuxufafesaxo.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/pisedij/judenifanufe.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/asdf_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/54052100066.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/plot_of_dr_heideggers_experiment.pdfIn PDF document text
    • http://kagilabitivibe.epizy.com/knights_chronicle_level_up_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/xatezukinopifani.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_off0000db49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB49 5276 bytes
SHA-256: ac8326ef8a6c3358d58026dbde5841257cb1e51bbe24be55ea30b29291e4572f
font_01_sfnt_off0000ed30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED30 10376 bytes
SHA-256: c19fbc7a1b042c1b8b04f073c65f0b1e6abeca74110f39dbd4659ef41aacff76

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