Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a3872e9dfb3a383…

MALICIOUS

PDF

67.2 KB Created: 2020-11-26 05:04:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 400ab806c8c93ce394446db058703c02 SHA-1: 95ddf8bf394d31e240e0a7560d93419d5b65d3a4 SHA-256: 5a3872e9dfb3a383e6d4545ba6a7f58c60ce6ea5b5c47667439505319f5e58b4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. 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 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vozuzuxe.weebly.com/uploads/1/3/4/3/134314749/muzanag.pdf.
  • 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://traffine.ru/strik?utm_term=d%2526d+5e+sprite+names PDF link annotation
    • https://vozuzuxe.weebly.com/uploads/1/3/4/3/134314749/muzanag.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/gipijepaborakon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406785/normal_5fbefa42c3886.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
    • https://s3.amazonaws.com/limewub/burmese_fairy_tales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561d1d00-b373-4f47-b2ca-2c1aad3b8c3a/91145478452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e7b3ce-ca99-464a-b2f8-f74a16513d3c/1893142114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8be2764e-169c-4306-9928-4eeae4d7c08c/mile_a_minute_vine_flower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3794d286-6888-4a29-a54f-b1247349dc3a/92005627358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2739d4d-05bc-40d0-86b4-062874240627/sfm_failed_to_lock_vertex_buffer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e86a99e-b716-45dc-b282-b732f2db1dce/ring_of_fire_lyrics_azlyrics.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC421 3484 bytes
SHA-256: 6d180028f71bbfcf2b8105938643ee3a2a1c409b0c980e92ec88398b70d34608
font_01_sfnt_off0000cf8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8D 10296 bytes
SHA-256: 22ae3c64bf8134d0076a4e2564941802d1f4184ed2e70f0cedf3ea4852d1ebb9
font_02_sfnt_off0000f2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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