Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7743fd0d411a370…

MALICIOUS

PDF

83.8 KB Created: 2021-03-21 12:01:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a59b8f2d3f113468f1676801e2649805 SHA-1: 2988187816f9318d7a05fb08ebaed55fdafd6561 SHA-256: e7743fd0d411a370f54307085db41d03bd14d5a71be2345b81b27a26d38c8437
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a deceptive lure related to educational materials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://kuzutuzo.ru/award?keyword=basic+english+for+beginners+pdf PDF link annotation
    • http://tagoturuluro.medianewsonline.com/best_way_to_teach_text_structure.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/SYhbhiC/83828686547.pdfIn PDF document text
    • http://dalosizofovabes.medianewsonline.com/51248591962.pdfIn PDF document text
    • http://sixesijilolun.mywebcommunity.org/tanzania_protected_areas.pdfIn PDF document text
    • https://cdn.sqhk.co/tarudifirew/87vhihj/my_calendar_events_disappeared.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/7623357.pdfIn PDF document text
    • https://pesowisigafu.weebly.com/uploads/1/3/0/7/130739627/3979042.pdfIn PDF document text
    • https://xonuguzuv.weebly.com/uploads/1/3/1/3/131382030/vaniwag_tomuv_derasaseme_lajowavipu.pdfIn PDF document text
    • https://fovodonote.weebly.com/uploads/1/3/2/7/132740633/4289509.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzesowasu/hcjj4ce/gopijujufujojutubogunemux.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimurami/pBZWhjL/2020_election_map_live_updates_cnn.pdfIn PDF document text
    • http://zuvatewovu.scienceontheweb.net/34233288781.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/idegXgc/chuchel_free_download_android.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/jupoti/10665401186.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/mitosis_and_meiosis_summary_sheet.pdfIn PDF document text
    • https://0ef2f354-78a3-4528-990c-72f69c86fc6a.filesusr.com/ugd/6a0da6_20cd78ac16c8434b91b2c4d00f666ab5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/57cb088f-f69f-4d85-b085-a9ec3869adfb/crochet_hat_with_ear_flaps_and_braids_free_pattern.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/ansys_workbench_19._2_tutorial.pdfIn PDF document text
    • https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_c994518486bc4858b9f0d6e8b4e31073.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/firudegix/aalavandhan_full_movie_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76988189-0fc0-481d-a149-af6934681366/how_to_create_a_stock_trading_strategy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad5911e-16e1-455e-9e47-3692bf39b0dc/radato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15ea9cd5-1ee5-4775-942a-659db30a1e0b/did_you_hear_about_the_antelope_who_was_getting_dressed_worksheet_answers.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_off00010899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10899 5604 bytes
SHA-256: 0b13f9cc77708e5e05b7d7d773ed31562de55878f4273f0e5cf1bf9294e10a9f
font_01_sfnt_off00011b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9C 10776 bytes
SHA-256: 55a92a4eec94945bb5b37a1b33a66f36b686606ab7e7cfd1ea3c8c7f1c4b952b

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