Malicious PDF — malware analysis report

Static analysis result for SHA-256 7284e43347199bf6…

MALICIOUS

PDF

91.8 KB Created: 2021-03-14 04:32:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0764aa159c9c0a3b585ec9ae64e97665 SHA-1: 84de099d8e42831808fbb9e53cc54ff5b252f45d SHA-256: 7284e43347199bf6a21dd306ff5611a161d899f1e6c3b566c378f1e22c21969b
66 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominently featuring a keyword search for 'beaux arts magazine pdf free', suggesting a lure to a malicious site. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, further supporting a malicious intent. While no scripts were explicitly extracted, the ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious content or behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • 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://soxebez.ru/award?keyword=beaux+arts+magazine+pdf+free PDF link annotation
    • https://ginadilu.weebly.com/uploads/1/3/4/7/134768391/9641494.pdfIn PDF document text
    • http://mnclassis.org/23016155729b7rfy.pdfIn PDF document text
    • https://cdn.sqhk.co/junizafuzep/jeAficS/piano_sheet_music_zelda_ocarina_time.pdfIn PDF document text
    • http://kelirifuwa.22web.org/convert_paint_to_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/wufotubi/jhdfjjE/44208133319.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/bpHaYge/rail_rush_2_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/hhcQhdb/english_story_for_learn_english.pdfIn PDF document text
    • http://pamesiso.22web.org/bupalowivokabatar.pdfIn PDF document text
    • http://amorexpo.com/38483634068s7k6a.pdfIn PDF document text
    • https://vemideluguzuni.weebly.com/uploads/1/3/4/6/134680431/xojuborapixajik.pdfIn PDF document text
    • http://outputqwvk.space/ziwazepixojabididusydts.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/hjexDha/xosinive.pdfIn PDF document text
    • http://strgb2.ru/how_much_salt_a_day_mghp4l6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tozuduxaxikagik.rf.gd/9144988923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e546ae-57a9-4459-8d37-13a96f67acad/66160466478.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/nimesubezidudu.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/assassination_korean_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fababe9-c08f-4b6a-af12-2dd2489000ac/network_guide_to_networks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be974e7f-6fa3-40f9-9f0f-cf93672f5eb3/how_to_write_an_essay_conclusion_wikihow.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/89452636262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3a63dc0-7abe-40ad-a861-98fccf23757e/67294581827.pdfIn PDF document text
    • http://roraxekabitapoz.rf.gd/varofexuriborukelezof.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/bewakatazinatidaladonug.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/value_journey_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6478f639-99fe-477f-87b4-72d25f236d52/contrato_de_arrendamiento_de_terreno_agricola_2019_para_imprimir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11655 5268 bytes
SHA-256: c24d5d3babbccb2b6b6b37ee1926f1c3c89deca298670b5f08f7f1e43f79e68d
font_01_sfnt_off00012834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12834 13476 bytes
SHA-256: 892b918b7fd8592688a60bed36ef60eda9b82f4b65b28e2ed17f4e6c7fe8ff47
font_02_sfnt_off000153a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153A9 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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