Malicious PDF — malware analysis report

Static analysis result for SHA-256 73354e204cb5467b…

MALICIOUS

PDF

145.1 KB Created: 2020-12-11 00:41:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 067c75ee32f9e8db5ac8901d4a4c4f30 SHA-1: d6b91b5e8e38c19ef614709f40a75c3e8654a00f SHA-256: 73354e204cb5467bd04dbda61ec42de52dc05e095e859bfa7ea2bc9bd93fa862
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent. Although the document body is heavily obfuscated, the presence of a malicious URL is a high-confidence indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://traffking.ru/123?utm_term=danganronpa+2+presents+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4370054/normal_5fcd21cdafd18.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/lorugipopuxe/constructor_game_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eaaab31-5c18-4737-9c0e-a9d4221b22a0/foxesijozafipesipurag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd178862-0540-4409-a808-b1bfc638b166/43636346943.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fe2417e7202640eab110/t/5fc1719608845d0924c12f7d/1606513046917/95431257642.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffe61bf71053ccb0b2b06/t/5fd11a4110275a0b908d147d/1607539266453/micro_battles_minecraft_server_ip.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11ea5a87939686409a0fa/t/5fc965e504e7723ed2f84690/1607034341534/atlantic_fleet_mod_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93831f52-e7a4-47c8-a377-bab8c7d0fefa/97547467183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f592741-b0e2-4dea-afc2-6356d1a5e8ab/40881398935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cce09b70-2f0e-487d-9715-86efe426a53f/tinofarej.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe389e5147b14804fe4261/1606301870261/paxowila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c707444-461b-4502-9d48-59fe1cf70b87/7353866286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c616986-5346-4836-a66d-25943d6e7049/gigetinajefutuvoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a72b888-0558-4590-97e7-42161220d490/sabilosoririrurufuseno.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/big_ten_baseball_standings.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_off000166c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166C6 42448 bytes
SHA-256: ad4d166c0d714d8c9fa642362bb75990ce04ae6c41d9a6f3c4467243a39f6508
font_01_sfnt_off0001e75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E75F 5224 bytes
SHA-256: 641d124dc30564b24f41b55a15260b9853ca6e9f3b7fd7458292ba1d6901d99f
font_02_sfnt_off0001f93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F93B 12192 bytes
SHA-256: 18153dbc5f18a3fe69f712533fb0d9f15efdeeaaa0b584f9c7c1ca7104a792c3
font_03_sfnt_off000221a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x221A8 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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