Malicious PDF — malware analysis report

Static analysis result for SHA-256 149be50082cab90c…

MALICIOUS

PDF

81.5 KB Created: 2021-05-21 19:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 10e7ccfc10bfcd6ea03a39f1d8f83314 SHA-1: bbc3e0b9a1f539c6e689c4ff75c765b69294a62a SHA-256: 149be50082cab90cf161db7ce5ce23cb0b0b1082f062f8e7685a5ca242998dec
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/strik?utm_term=resumen+el+arte+de+la+guerra+sun+tzu+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465128/normal_5fce70cb7f23a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460066/normal_5ffe96973e838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477155/normal_600b33085ea6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393762/normal_5fe50d1fc02ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474998/normal_603cfad597241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449974/normal_60454c7005f4d.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/42149c4b-c8b1-404c-8975-8bd93e799c60/didirutuveba.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/30837835703.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/ariens_rocket_7_tiller_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/89403695886.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/52764167390.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/80782388774.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/bedimadabawibanifudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7235a2a5-b9b0-45cf-ba3d-3ffc68340546/biology_genetics_review_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/fawizatozogirenufidi.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/baywatch_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/shake_the_papaya_down_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/22435943800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/216c506f-535f-4926-aca0-a0e2c37a51cf/67743056946.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/8715698965.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/51248623498.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_off0000fc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC68 5420 bytes
SHA-256: 581dbbe497e47ca39b9d3c9a1ac547ee830d0b8e0b82530b4fc558deb2e960d1
font_01_sfnt_off00010ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EC6 12352 bytes
SHA-256: 2ed7f058e89898faef9f9972eb8f68721f26de2bf8f62cc4a6a7b745d9fdf482

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