Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab1abca39523d4a…

MALICIOUS

PDF

87.6 KB Created: 2021-01-16 12:18:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5c63202850656d96a8ce03f58e1a7e9b SHA-1: 975d407e8a86d0914b6dd9e80bdfd788d8bfa2ad SHA-256: 8ab1abca39523d4a4c5028d2af81d191a75032e3b786df52e83ec668a464cc80
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://traffking.ru/123?utm_term=legend+of+fuyao+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383702/normal_5fb6ba6f8a14f.pdfIn PDF document text
    • https://site-1177404.mozfiles.com/files/1177404/pubg_mobile_zombie_infection_mod.pdfIn PDF document text
    • https://site-1180586.mozfiles.com/files/1180586/20104610732.pdfIn PDF document text
    • https://site-1176140.mozfiles.com/files/1176140/ragnarok_vikings_at_war_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415740/normal_5fb2a5fa6cc7d.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/netinuwa/26186850294.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/fipabojupasolaz.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/kuweraromawutad.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/rescind_a_job_offer_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/worksheet_on_interjection_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/candy_kush_auto_smoke_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/breakup_punjabi_song_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/cobb_hatchery_management_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
    • 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_off0000fa50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA50 3228 bytes
SHA-256: fb79fa047eb0479536e1686eeb48bbccfdb416493cddff11c21dad96e9070f82
font_01_sfnt_off000105dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DC 5060 bytes
SHA-256: 3453d0db691d28e36163d3d90a52a257b664eddfd9bf13f94835d68d5f8ce24d
font_02_sfnt_off00011748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11748 10212 bytes
SHA-256: b82cd324254516082ec07b2aa4a7fce722a80cf623601e8e9c5c14eeca32c89b
font_03_sfnt_off00013a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A6B 16060 bytes
SHA-256: 1018660efa6a1a00280f0dbd6ee9814149b2344b9acf14d98de2cb76d1e712aa

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