Malicious PDF — malware analysis report

Static analysis result for SHA-256 487abce8140f637a…

MALICIOUS

PDF

78.2 KB Created: 2021-04-21 10:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 41e72eabdd4dcc2720f49d4c5800c9b9 SHA-1: 85854840e47a0f011d2d51119b5ead001101af19 SHA-256: 487abce8140f637a87cfc8bf4b8bd32290b7add92663579a6310b09fcf9a6c44
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text suggesting a lure for 'Heart of darkness full movie download'. The presence of numerous external URLs, including one pointing to 'ponafet.ru', strongly suggests this PDF is designed to redirect users to malicious sites for phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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://ponafet.ru/strik?utm_term=heart+of+darkness+full+movie+download PDF link annotation
    • http://lanizimugigil.getenjoyment.net/gevarozuzejuforikuwu.pdfIn PDF document text
    • http://skout.tech/how_to_get_polo_outlet_couponsyb6dr.pdfIn PDF document text
    • http://pubgmobiie.com/gupatonadowu4m4qe.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/dbhhhhI/best_free_beat_making_app_for_iphone_2019.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/allyn_and_bacon_guide_to_writing_5th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/livulopo/gfjbj2W/rodeo_stampede_game.pdfIn PDF document text
    • http://rankingcoach-apps.com/information_brochure_neet_2018_maharashtrahurzg.pdfIn PDF document text
    • http://kefijor.mygamesonline.org/athlean_x_max_size_reddit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/70848d5f-4f08-4de0-b557-4a8d6d6cc682/25900216793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09e92f6b-8f9a-481d-8a77-24a8a5a22f51/finerizumodiwamuxibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d55fb4b9-2d90-45f1-b2a9-ad61021591b4/api_570_inspection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6962ca12-eeb8-4b8c-aaa1-03b0920fc2c0/senirubonolotex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/149f3cc4-8141-4a8c-be20-3bfe2020f95d/jesus_at_the_center_chords_key_of_g.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bca68401-07ba-456d-9eb6-2838adf683eb/one_call_away_ukulele_tutorial.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/pitalokenufidimisajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe7068f6-1810-4758-9fde-f55f909d3924/jejitofuvepigaloruxulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71f66b7a-24dd-42fe-8a90-cd595c782f1a/what_is_error_3_on_blood_pressure_monitor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d71222bf-f627-4b15-bcd0-eb6d2c01ec48/what_is_the_principles_of_prehistoric_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0874b98-0191-49a3-9036-4d575a2aee5b/2007_ford_f150_trailer_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d1051b-cd6c-4159-935b-5c67a7a90a13/long_john_silvers_daily_specials_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac47a464-8f77-46fa-8de8-cae371be6056/romeo_and_juliet_quote_analysis_act_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0273ec82-0e61-4a5c-9e5f-401b4b1963f5/gitidozolokizevixo.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_off0000f3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CF 5232 bytes
SHA-256: 198d731b0327051df259ff0db54dd3dbdb1285f3c765d4a24b84eaefc33d6b80
font_01_sfnt_off0001059b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059B 11036 bytes
SHA-256: 5d480ce39b6c89a69fb153623ba3d46d412469e8cae3566d667b20b06adf94d8