Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec781e087d027fd…

MALICIOUS

PDF

78.6 KB Created: 2021-04-22 17:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 616532d9bf8146ab0d6a960627fd92f2 SHA-1: 95bfb944e9467e4d3f74f9e34ebdab978384d62c SHA-256: 6ec781e087d027fd78e003feb8c350f2535c37a15b931b7d14688b180dec0d85
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://leonvi.ru/strik?utm_term=diary+of+a+wimpy+kid+the+third+wheel+audiobook+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462982/normal_602abc4de3f6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420235/normal_601cea71ecc71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470207/normal_6055833a41ec1.pdfIn PDF document text
    • https://cdn.sqhk.co/ranamifujuki/ieiejce/krunker._io_hide_and_seek_maps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464851/normal_6055f2595484c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_60470967f236c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471109/normal_5fcf04fe2f464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489583/normal_601ecbd5216ce.pdfIn PDF document text
    • http://sapapubusil.22web.org/xivowagelazamepo.pdfIn PDF document text
    • https://cdn.sqhk.co/guzoladip/eVifgdV/lononokuvibixegawotaletid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://texuxirim.epizy.com/bluebells_of_scotland_tuba.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/dupapiwuga.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/37692494400.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/horizontal_and_vertical_asymptotes_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/water_supply_in_high_rise_building_slideshare.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/research_proposal_sample_special_education.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/microsoft_outlook_web_access_owa_user_guide.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D1 5500 bytes
SHA-256: 99b40fc3663e6aa4841f9457e61916b7d13ac0662bbd65a5e6ddcdcdf1221d47
font_01_sfnt_off0000f777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF777 17472 bytes
SHA-256: 4e0162411f9ea08c878821122b4f5c6c5e41bef185b389de0eeb61c7efdd243d

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