Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a395bfc879be839…

MALICIOUS

PDF

79.0 KB Created: 2021-05-21 04:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6f8626f8bdab101febbe45f6d9920e1f SHA-1: e87b4e096965f7871969d0b3f93ad8fa472370f1 SHA-256: 8a395bfc879be839c2b8535d62cff103dd560626ca1fbc874fed6312e15b9bc0
104 Risk Score

Malware Insights

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

The PDF file contains a lure for downloading a movie, which is a common phishing tactic. The embedded URL points to a suspicious domain, and ClamAV detection confirms the malicious nature of the file. The ML classifier also strongly indicated maliciousness, suggesting the PDF is designed to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/strik?utm_term=interstellar+full+movie+download+in+telugu+480p PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365660/normal_5fceb73ae1d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_601d96f2d9d7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_6020be6b93864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413969/normal_5fff3b2c13930.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369923/normal_5fff28049c0e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428335/normal_603e3c89814d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472774/normal_5fd819b1a4341.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/juduk/live_sports_hd_tv_streaming_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c56c6d-d78e-4c9a-9dbe-e25d128ecb3d/15902974692.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/st._augustine_city_of_god.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3b4cd5b-79f7-4cdc-947e-8ace5e6a4044/vunilaronumosasazabileb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca5df47-573d-4e6a-91c0-8e7fe90040a6/how_to_find_surface_area_of_a_trapezoidal_prism_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/134a77e1-2033-44a7-b360-cfefd191a580/how_do_you_draw_realistic_portraits_step_by_step.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/53905801525.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/windows_defender_security_center.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/99098597803.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/79611842747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1e9316a-266d-4434-b1a4-b5c387b686c8/ac_circuit_analysis_practice_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/powerpoint_template_wedding_invitation_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8da6731-fdb9-43a3-a6df-58e95dc0eb00/ada_mp1_clone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/979af634-11fb-4820-82c8-2733d55164cc/bajekoposinegajinasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37a263a0-4d7c-4360-98ac-883421799471/bhagavad_gita_chapter_11_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5723b1d-47cf-4150-96d1-4139aa53f690/19339667299.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_off0000f663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF663 5876 bytes
SHA-256: de68aefc04c88d658ea9b311f7ae19e3f3e7df197b83f93587e62c811df909fb
font_01_sfnt_off00010a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A65 10596 bytes
SHA-256: 5495aade6bfb61f82a60b7efd983624bcbf9e5105a515a4c2ff68fbf53fe8002

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