Malicious PDF — malware analysis report

Static analysis result for SHA-256 0977a7fcb3f762df…

MALICIOUS

PDF

89.3 KB Created: 2021-01-26 04:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 102d8fa9894b9b8a2c85073d2d64e1fb SHA-1: 002b51e102dad6e57e51e2c8951dde765d49e262 SHA-256: 0977a7fcb3f762df33fa44fc26d83cac3f0cd530af1e5f81d1ca11ffe32799a0
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://druttle.ru/wb?keyword=1972%20iowa%20duck%20stamp%20print', which is likely a phishing lure. The document's structure and embedded content suggest it is designed to trick users into visiting this external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=1972%20iowa%20duck%20stamp%20print PDF link annotation
    • https://kerobasoxegetun.weebly.com/uploads/1/3/4/0/134017970/dozaxe_navozudod.pdfIn PDF document text
    • http://testvvd.xyz/kiroputifejukibokix1or1l.pdfIn PDF document text
    • https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/xubabugedas.pdfIn PDF document text
    • https://bezijenogekise.weebly.com/uploads/1/3/4/8/134875893/xisikolisamenarum.pdfIn PDF document text
    • https://mavujaxubuxabo.weebly.com/uploads/1/3/0/7/130775304/jenibajisi-medeziwopokinil-webexokirej-wejesunusofe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451755/normal_5ff2b9d1615cf.pdfIn PDF document text
    • https://wuzinetasinozud.weebly.com/uploads/1/3/1/6/131606123/jifewavur.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/satedafadusizo/tawopadarezuwobi.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/st_bedes_bristol_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/lanusizuwanoleropejalev.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/lifidama.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/44259224907.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/44409840353.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/scheherazade_sheet_music.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_off0001137a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137A 5668 bytes
SHA-256: 464286225a2af90f40f70da0ca17b3eb5d2979099287b5dca4827a89171c74dd
font_01_sfnt_off000126cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CC 14920 bytes
SHA-256: e0330ba1a7fc5fb997de6deea3e86f2f161f4107b5a64197dc4b01ca351bdac0

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