Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca92a09d2461a55…

MALICIOUS

PDF

100.0 KB Created: 2021-03-11 14:11:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e1d772bfeb95d9fb9b8f4b5c6cb324a2 SHA-1: 94970732abd3ba1cb6a42f7376a29f2700b035da SHA-256: 4ca92a09d2461a55f61792f0555d223de0c3597d5f60aa811f5314c773e8e0a0
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, including one pointing to 'lozipotod.ru' which is presented as a search result for software tutorials. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is part of a link farm hosted on disposable domains, further supporting a phishing or malware distribution scheme. No scripts were extracted, but the overall structure and URL distribution point towards a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=blend+for+visual+studio+2020+tutorial+pdf PDF link annotation
    • http://gebevojika.mygamesonline.org/what_are_the_three_forest_biomes.pdfIn PDF document text
    • https://cdn.sqhk.co/rizitewav/NugjRq1/24395601396.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417405/normal_600e33f5800a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498392/normal_5feaed78ee998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_6049caef741e7.pdfIn PDF document text
    • https://cdn.sqhk.co/tavedikovo/phajbmr/29461501646.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/DTgfUEf/scary_boss_3d_level_9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_600f2dbc78ba6.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/aa_meetings_on_zoom_san_diego.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_6043599b64267.pdfIn PDF document text
    • http://tupakewufitid.iblogger.org/brief_publicitario_libro.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/hahgdO6/powerschool_mobile_app_code.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/hjhajbq/87976332488.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/wo5ijJJ/grow_credit_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469834/normal_5fcff6553652e.pdfIn PDF document text
    • http://juzufezike.mygamesonline.org/ray_bradbury_the_pedestrian_study_questions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465024/normal_603415966c58d.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/6xJjhgj/texas_a_m_corpus_christi_baseball_field.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rejaromavovelu.rf.gd/beverly_hills_ninja_full_movie_free.pdfIn PDF document text
    • http://tuteninuxad.rf.gd/what_can_i_mix_with_crown_royal_peach.pdfIn PDF document text
    • http://lejiletuvasipib.onlinewebshop.net/what_is_a_liquid_ring_vacuum_pump_used_for.pdfIn PDF document text
    • http://damadikaj.epizy.com/gizatizigida.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_off00014c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C58 5420 bytes
SHA-256: 0ab0c73d044614f5691524b3761e7ef9ae12520b9c619f68e8e311389deb0ec2
font_01_sfnt_off00015edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EDC 10472 bytes
SHA-256: 9fc544c4e4eaa612aecdc6bdf5b88234ad5975c425ffc6b469a75d735bf2b0d5

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