Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb3eea0297f5d0e…

MALICIOUS

PDF

73.5 KB Created: 2021-02-16 07:49:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ff966802076ef1085178fb11f7c1cdd0 SHA-1: e7745e51e13f3ac77ddda32253478cd19f93a34d SHA-256: efb3eea0297f5d0e4d2311cc8b5c132f134330ad7fdb54a34f7ecb6001c4770d
96 Risk Score

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-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://maypoin.ru/wix?keyword=minn+kota+riptide+manual PDF link annotation
    • http://nakidki-alkantara.xyz/lone_wolf_saga_mod_apk_money4rxh1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416302/normal_601f878a1b1aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465685/normal_60180b88959d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380209/normal_600118673b5eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_6028914063db0.pdfIn PDF document text
    • http://yesstore.pro/nanotechnology_in_solar_cellse0d7p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375716/normal_5fdc4a288cd67.pdfIn PDF document text
    • http://duplicwcnj.space/black_and_gold_boots_ladies5899a.pdfIn PDF document text
    • https://cdn.sqhk.co/lufezeralon/Ujijf9K/93675466596.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/fajonubinomeder/riwafijimobiribitega.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/98044224838.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/coreldraw_x4_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/51541612708.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/motovujukovi.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/lightly_row_cello_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/49328053466.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/candy_candy_manga.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_off0000dfff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFF 4996 bytes
SHA-256: 13c7d5fef675cf43cfa0e9edd691bf7bc72dbabe3a46c4fd600d5181c6440967
font_01_sfnt_off0000f0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F1 12688 bytes
SHA-256: b6c096ac3fef97de3c6fb4f39d82c3ced59e9a93b6092c7bcba2bcf557035167