Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2457e7a5ca5e7c…

MALICIOUS

PDF

77.7 KB Created: 2021-05-24 04:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2c03aabffcd0e186904a751f039e93e4 SHA-1: 7d91331499c419df58ea0821c1c24bccd9170365 SHA-256: 3d2457e7a5ca5e7ce84ce0aeec7260bc9f978b7db781d3a37481ec95d6f95652
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that mimics a search result for a movie download, indicating a social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=the+martian+hindi+dubbed+mp4+movie+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482623/normal_606c364b11aed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478951/normal_601d98c8594e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453729/normal_60682d8fd56c1.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/94de582b-e299-4915-9a4b-b8082846f961/option_trading_strategies_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/is_mortal_engines_a_series.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/bitojalumuzidevarokexov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48568ee3-9a9d-4194-b94d-e35a7f46c258/find_the_fourier_cosine_transform_of_e-x.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/76739741701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe28bf02-3c12-44f9-95dc-373996baa67b/el_lazarillo_de_tormes_contado_a_los_nios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6efdc3ba-d8df-4e74-b378-2edd95b6450f/polder_meat_thermometer_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84435db2-83cc-4552-b0cf-5e2e1fa02dea/how_to_find_my_lost_sim_card.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/mujisakodo.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/apc_battery_backup_plus_surge_protector_back-ups_es_500.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/tugopebudedoxapifumef.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/mabiw.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/descriptive_analysis_in_qualitative_research.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a4520be-4601-402d-b902-ab4c648c9b1f/kokumedupe.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/48838743443.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/16711737444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f08947c-1e5d-4de3-ba93-a28462178f7d/best_survival_servers_minecraft_1.8.1.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/polaris_xplorer_400_2_stroke_for_sale.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_off0000f1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1ED 5348 bytes
SHA-256: 4ae2b57113be00cbb87910cfafe19489006f6889a725cffb265d9d196dcfdfd8
font_01_sfnt_off000103fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FE 10868 bytes
SHA-256: 8c661d20e1dde09e8f109853d6c869eaf8a5d5b16935054ed00d6ea3cc92bf95

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