Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ca5a28420d342ed…

MALICIOUS

PDF

100.8 KB Created: 2021-03-23 01:45:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 97a8a4a8db25e19d6ea7bf8770dcbe00 SHA-1: 58d08dcf9c922e44135e3a49201b833ca929deee SHA-256: 8ca5a28420d342edca4796b6fa159c7967aedcf669edb76ea5b536e9571f2dbc
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 0.9994

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://vilenefex.ru/aws?utm_term=basic+hindi+phrases+pdf PDF link annotation
    • https://cdn.sqhk.co/puxolika/igi3ETf/virgin_mobile_ksa_balance_check_number.pdfIn PDF document text
    • https://cdn.sqhk.co/foseziwate/gggcpib/asphalt_8_airborne_perfect_nitro_triggered.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxinugad/bVheZ4u/responsive_html_css_template_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403537/normal_600e2439d4a6a.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/hHgjgge/callaway_gardens_resort_hotel.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/hhCQheE/define_splendor_antonym.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410714/normal_5ff34e1e34781.pdfIn PDF document text
    • http://gufelujoziwuki.iblogger.org/angularjs_form_dirty_pristine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/widiku/rawls_theory_of_justice_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/68370586213.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/confidence_level_statistics_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/bejobiludixavume.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/tinojeramabiveweraw.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/ps_vita_slim_protective_case.pdfIn PDF document text
    • http://lolefijulakemi.rf.gd/toniolo_cemento_armato.pdfIn PDF document text
    • http://pofiron.rf.gd/ridaguposase.pdfIn PDF document text
    • http://siderawe.epizy.com/27193143723.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0E 4860 bytes
SHA-256: 00e61994454b439564a500889fc23bba6d8baeb54f7d417872f07f13abcf09db
font_01_sfnt_off00011b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6C 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off000126cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CF 13096 bytes
SHA-256: b8566d56ba827c8b2d2d53b358419ea8890fa051750d6872ac00a3129ac2625a
font_03_sfnt_off00014f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F4D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
font_04_sfnt_off00015d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D4F 13700 bytes
SHA-256: 46ddc8c75af80ddcd0057f7fae5ad8013b6edb4d70d744fc89f5c7d699975332

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