Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb61aa18463e1a19…

MALICIOUS

PDF

88.7 KB Created: 2021-03-28 06:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bacc6f3f944f6d6891228e1640c05d16 SHA-1: 4a5b4aacd1a8536fe2b2bf88ce66189836e41738 SHA-256: fb61aa18463e1a19d5bda6d023b5195f8157fa3551185bf843bebfad19665a87
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 0.9996

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://leonvi.ru/strik?utm_term=does+sodastream+do+tonic+water PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450356/normal_60420b18cd0a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405652/normal_604186e519f66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478933/normal_600a7c9d05115.pdfIn PDF document text
    • http://arnautmebel.ru/70s_music_artists_r_bagnde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_603bb04701d31.pdfIn PDF document text
    • https://cdn.sqhk.co/tadanopi/xyOhahd/95821701475.pdfIn PDF document text
    • http://amaryllis.space/sajofebeladumaxiv78qz.pdfIn PDF document text
    • http://forexgeeks.net/72009314951jh9ha.pdfIn PDF document text
    • https://cdn.sqhk.co/titesojijuko/b5ghSge/republique_dominicaine_voyage.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/fhiICic/4276295308.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaluwozez/hjgXTic/dowufulixetusenozabig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463308/normal_5ff7815f51fa6.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/womirofop/high_school_biology_textbook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/plague_inc_hack_apk_ita.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/judunijujolexerut.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/programmable_logic_controller_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/66484494914.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/virtual_frog_dissection_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/chevrolet_spark_2016_review_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/69778219558.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC10 5144 bytes
SHA-256: e2479a3055890b8f4da89faf1e162a93f3783abd482e5e3121e2ef22bb7f54a9
font_01_sfnt_off00010d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D83 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00011611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11611 12140 bytes
SHA-256: 91a57354cdfcc27026ea3a2a8bf640a016ce1d5515b2cd98974b8b03e49abf8f
font_03_sfnt_off00013f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F39 16240 bytes
SHA-256: 93140c8d2dd439df1233b9fdc4e56356eb5a0f283fe723be281a06698e1d98da

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