Malicious PDF — malware analysis report

Static analysis result for SHA-256 473006dc4603d1bc…

MALICIOUS

PDF

77.5 KB Created: 2021-02-24 22:22:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a9183a5ba43b7fbec3ac9e64ead1c3b7 SHA-1: 1da9dc4dc83d935b42044a738e74522edc4f4900 SHA-256: 473006dc4603d1bcdf772bca0b7fb0b9bb34c3b620454db2ce13e863fe52512b
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 0.9998

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://maypoin.ru/123?utm_term=how+to+fix%252Fbypass+gta+5+activation+required PDF link annotation
    • https://cdn.sqhk.co/jerivudofin/4pSvhaB/gilexij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470979/normal_600e4c8881e4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404287/normal_601737ccf10ff.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/FicfJE1/drill_down_capability_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460043/normal_600d953c785c4.pdfIn PDF document text
    • http://9gusevshop.space/the_weatherbug_appumusw.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/28227435991d7le4.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/keic3gg/zolabuneradovus.pdfIn PDF document text
    • http://fortuneocredit.com/hannstar_j_mv_4_94v_0_schematics2cefu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420612/normal_5fef8b88e4558.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/jigfsAa/wutaderavutawegimevesetu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_5fd8b4cf3b0b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457006/normal_5fc6cbf8a163d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408186/normal_5fe82f9af00af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459621/normal_601ba60a13bc2.pdfIn PDF document text
    • http://mnogoturov.com/498738418192yvjr.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87C 6000 bytes
SHA-256: 82db28a6626e10faa10462efd78d048430cdc75468d2906d03443b0b3a5a0603
font_01_sfnt_off0000ed18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED18 11056 bytes
SHA-256: bc5a9fc09ff6673a2a6e2013b4cbef6a08cfdb22e416ef71d7066e4bb91b31f7
font_02_sfnt_off00011319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11319 16272 bytes
SHA-256: d530718e9df1c9c1d3610f5cc51729c7c92c08fac46a698852df3b7060a5d54f

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