Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5660d8a2b38cfa9…

MALICIOUS

PDF

81.1 KB Created: 2021-03-19 03:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4940c54ab471dd8e0d8bde90f0f050f3 SHA-1: 2c9751caec6737a1f9159bae202a5f9ea61c4439 SHA-256: c5660d8a2b38cfa96011e51b7567c97f392342aa2ba91378445a5a884cd1ba01
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'wizard of oz hanging picture', which is likely a deceptive pretext to encourage clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=wizard+of+oz+hanging+picture
    • https://cdn.sqhk.co/tinolaseja/fXothc9/how_to_download_pax_3_app_on_iphone.pdf
    • http://verifybadgesbusiness.com/57823253049xz948.pdf
    • https://cdn.sqhk.co/pulazapusaw/zjdqhep/los_picapiedras_personajes_pelicula.pdf
    • http://pr-bux.online/13526659349k6oe3.pdf
    • http://igme.site/4078077377984x45.pdf
    • https://cdn.sqhk.co/wozejodes/fgevlgh/barber_shop_midwood_brooklyn.pdf
    • http://unonatur.space/66814080502sbhgc.pdf
    • https://cdn.sqhk.co/xurinuwame/Yojc5jc/eartha_kitt_i_want_to_be_evil_traduction.pdf
    • https://cdn.sqhk.co/mixaluwekitu/jWhalib/speak_english_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9df6fdd8-df71-43fb-87ad-b121b2de7416.filesusr.com/ugd/e0d0cf_d0084479f95f4f37b3f77a424d741702.pdf?index=true
    • https://s3.amazonaws.com/degisapemifa/lumbosacral_spine_x_ray_report.pdf
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_6b09ef06b59a4f2c9dfb1ec1e51b059c.pdf?index=true
    • https://s3.amazonaws.com/muxozuvalubi/wefarasamibudububebigete.pdf
    • https://uploads.strikinglycdn.com/files/6189af58-96bb-4221-a604-c53b3bf064ba/why_do_i_feel_so_full_every_time_i_eat.pdf
    • https://s3.amazonaws.com/sigobija/cooking_oil_molecular_formula.pdf
    • https://uploads.strikinglycdn.com/files/1a61a163-7e41-44ab-a6d5-e51b2a31980a/denisel.pdf
    • https://uploads.strikinglycdn.com/files/636c5100-2347-48e9-ab7c-e6d4d8e1643f/pdf_preview_handler_not_working_outlook_2016.pdf
    • https://s3.amazonaws.com/polexebuj/1298114732.pdf
    • https://uploads.strikinglycdn.com/files/36620f3c-d6e8-4f9e-abe6-9d531e9991be/iso_31000_training.pdf
    • https://f904ef53-caa1-4f0f-8a97-c50675c03ece.filesusr.com/ugd/2f8cea_2f0953a0001141f4a0a3c97c510952e7.pdf?index=true
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_32fc2453bd63499fb1703ece70a1af83.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7eed970b-2c12-47bb-9737-fd473a7e4fb0/you_can_call_meaning_in_telugu.pdf
    • https://s3.amazonaws.com/xipavir/windows_server_2016_hardening_guide.pdf
    • https://246406bc-bb0d-4f29-baed-d8a6153a9543.filesusr.com/ugd/3ddeef_56ec42e96708424d974a5d81a44b58a9.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fdde.bin
378ee938e3a7b78dc30baf9f512787c326d2fba02504dcfcc9ace28974adc01b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDE 5268 bytes
font_01_sfnt_off00010fe6.bin
48f26da8517796f5b64fc380a0632c186923f2620f7a1c6de64ea197503ff180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE6 11496 bytes

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