Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f232ac52126262…

MALICIOUS

PDF

76.5 KB Created: 2021-02-12 05:31:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 93fee61462cdbf8a2841143a394e6531 SHA-1: 5e02d1b00b956f2089a8ad9b033718df0d659604 SHA-256: b8f232ac521262627dca7ca0a937e05035d83d48923dc89c400c33cb4b40a8fc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URL that, when visited, likely leads to a phishing or malware download page. The presence of PDF_URI and EMBEDDED_URL heuristics further supports the malicious nature of the document.

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://crophysi.ru/wix?keyword=nintendo+switch+operations+manual+pdf PDF link annotation
    • http://tubezadobuzaro.66ghz.com/gipiludujurifu.pdfIn PDF document text
    • https://lonexuganaj.weebly.com/uploads/1/3/1/8/131856054/jasedokuvana-mabewa-surapavabej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_5fd7b5cb24f3d.pdfIn PDF document text
    • http://tufejife.22web.org/making_a_report_to_social_services_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478670/normal_5fc6f1c7a0e42.pdfIn PDF document text
    • https://sowekunozo.weebly.com/uploads/1/3/5/3/135321923/bowalukif.pdfIn PDF document text
    • https://nibowivuxewanu.weebly.com/uploads/1/3/1/3/131379040/xubasuruvo_vumevuwutat_nadowa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454808/normal_6014a11d4d7a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418981/normal_60133972b537a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387817/normal_5fd05fa31614e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501810/normal_5fc8a43ac1598.pdfIn PDF document text
    • https://pavibizad.weebly.com/uploads/1/3/0/7/130740264/184094.pdfIn PDF document text
    • https://giduzuzetedeze.weebly.com/uploads/1/3/4/8/134853145/zubafutuxomana.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414167/normal_5fcfadf66777e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447912/normal_600102c1345b1.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/nosepevozux/chocolate_movie_full_hd_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/469732732.pdfIn PDF document text
    • http://zagaturatok.epizy.com/gyeongbokgung_palace_free_guided_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/manual_can_opener_types.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/zoramapalidumifimu.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/wevegafaropefigipavoruf.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_off0000ee27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE27 5456 bytes
SHA-256: 8c7577f4ce1f3be2645b5fb56e8c6a23af549b7dc652d78f0e00560d98889591
font_01_sfnt_off000100a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A3 10420 bytes
SHA-256: 9237980d6a7e00f53a248573cda931ee3fec3db6751d24f1add83512e2c150aa

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