Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00577772f7954f4…

MALICIOUS

PDF

72.4 KB Created: 2020-12-26 01:35:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c1e626e8d0a3bf1af08fafe83cbd52e1 SHA-1: 9083258a4cb07990522fef16a1ccb03d597c8a67 SHA-256: c00577772f7954f4e001ec68882c66a93076be268164ffed4255faaa57e8eb8f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://traffnew.ru/aws?utm_term=lyrics+english+song', suggesting a lure to a malicious site. The document body is heavily obfuscated, but the presence of embedded URLs and the overall verdict indicate a phishing or malware distribution attempt, likely using a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/aws?utm_term=lyrics+english+song PDF link annotation
    • https://cdn.sqhk.co/sufadoma/MfZq8if/blockstarplanet_hack_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/nanuvoxeva/dCahbjf/debt_payment_calculator_excel_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f93ed4334b7c.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/KtJjihg/global_citizen_festival_2020_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/Uidijhc/stickman_ragdoll_games_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5f96c7d518e7c.pdfIn PDF document text
    • https://cdn.sqhk.co/wemupaxuziv/nGij8ij/9343722137.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/gilCLgd/35786018770.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/guxosa/82449102264.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c5f367-c6da-446a-b6d4-bb6c7716fc9b/benchmade_infidel_3300_review.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/ipcc_report_2007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28858876-4deb-477f-89c3-ea315cc3defd/walnut_creek_school_district_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/kunomodizadizapamoxijumu.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/75924103563.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/add_subtract_multiply_divide_negative_numbers_worksheet.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17F 4892 bytes
SHA-256: f48f1af15e68e7dcfc00e6426230eccf976cb6d6e99cce40d6972ad2b362e177
font_01_sfnt_off0000f22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 10228 bytes
SHA-256: a6622e01b09b611b9f6146512c63ae0e09eef0efb3cf7b00f9cbc8cd933d9bcb

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