Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3bd78cc986a01c3…

MALICIOUS

PDF

73.2 KB Created: 2021-03-01 05:12:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 16588a7dcb850aee142ea769f2ccdc69 SHA-1: 619de1ef73e7a1618b008026e31b2e7f1db98969 SHA-256: c3bd78cc986a01c393755409adcc59d7172548071233cf0f81ecb60ae0bd1de5
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-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://seumenha.ru/wix?keyword=burnet+woods+post+office PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473340/normal_603b3eeb2e27b.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/nhijcvb/82898224597.pdfIn PDF document text
    • https://cdn.sqhk.co/runolisor/pjjhcoO/nuklearny_szantaz_crash_dive_1997.pdfIn PDF document text
    • https://cdn.sqhk.co/gavivevok/bg1jfje/laworifidilavo.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzixije/ojchahi/17691464065.pdfIn PDF document text
    • https://cdn.sqhk.co/kupawusel/YV82eid/sutevekego.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477183/normal_600216723390b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446638/normal_602a1791b34f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467017/normal_6020fa7cea1ff.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/fQhehhi/evacuumstore_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467945/normal_5fe4129694e00.pdfIn PDF document text
    • http://keksik24.ru/the_wonderful_wizard_of_oz_script_play1jrn9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410006/normal_5ff7c866549c5.pdfIn PDF document text
    • http://top-salez.site/powowupibepo31cz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382965/normal_5fd280e99900a.pdfIn PDF document text
    • http://instas.site/stocks_investing_for_dummies1mbir.pdfIn PDF document text
    • https://cdn.sqhk.co/tarozawowe/jdmbhcL/webalupuxuderidazej.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/fDthgjh/31268791003.pdfIn PDF document text
    • http://requiremcgood.com/stockade_soccer_kingston_nyxc3wn.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/rhe3gfZ/do_you_play_tennis_in_japanese_language.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D7 5048 bytes
SHA-256: f2a48a89faa63d232a0cfe4e9566d7ccf5a86f7feeb138241d91f6ffe742369f
font_01_sfnt_off0000f42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42B 10500 bytes
SHA-256: 11fae001dfc18c10cd971844a17c1ccdaf1d7e5c9b8b23b5f1bbaa578014059d

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