Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d32baeb3b63ea74…

MALICIOUS

PDF

70.7 KB Created: 2020-12-16 07:58:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 33f675b44e7256956958ed6cee313838 SHA-1: 9869ae69fb3a9640b295ba58b10b14b74bb63284 SHA-256: 0d32baeb3b63ea749266fb8c697986f227ffb5b020aca5b1a1e5d94676030b5a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?utm_term=but+is+it+art+kipling'. This, combined with a high ML score and ClamAV detection, strongly indicates a malicious intent to lure users to a harmful site. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=but+is+it+art+kipling In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2a5b42e537a05ef144f11/t/5fce361b2fa8bc6bcd14163b/1607349787583/75057137149.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a825a13a450babff6b59/t/5fcb200f36758319a54dd2e9/1607147535449/red_alert_3_uprising_multiplayer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc378dd6b97992eb56c2202/t/5fc43a3f08845d09240fbd90/1606695487942/gimatodofidosoluraza.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fb6b88c99b6d37a78a63/t/5fc1311661e25426e16324d2/1606496536048/ethiopian_civil_code_amharic_and_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bdf2707-6aeb-423c-bb3d-03ae4961149e/law_schools_in_tucson_arizona.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc360761c8c74131441d742/t/5fc6574c3f75b16643ac8955/1606833996893/learn_java_coding_from_basics.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54eb7085bf90c0e1a52d3/t/5fcd7ebf0ab5d62feb096b5d/1607302848276/amazon_fire_tv_remote_says_battery_offline.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5346bc819f1cf4cf4f2c/1606374215949/34055163347.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64a44a3bf4b14abcdd78e/t/5fd21a28ce71ee580fb24f1c/1607604784531/free_wordpress_plugins_for_ecommerce.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc165fda8793968640bd5e7/t/5fc5026ee18c5c478e98fc7f/1606746739697/spotify_beta_apk_2017.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27abee9fc3622d52c1c80/t/5fc4e6ad9d793648402806b3/1606739630473/23818478299.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc338c4be9b69395119d659/t/5fd0678c0c0c9b10ab0794de/1607493519326/leo_s_flight_simulator_pc.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_off0000d83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83D 5100 bytes
SHA-256: 3ed0166a8f4d724dbcabe7b676603fdd5421632fd597f5a7181c2b52c3aad88d
font_01_sfnt_off0000e9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AC 10860 bytes
SHA-256: 9188ba073d914e0951b495174be2ed5030c90df6efd0a8c1e722d815af9b4144

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