Malicious PDF — malware analysis report

Static analysis result for SHA-256 519a243237e446ec…

MALICIOUS

PDF

76.1 KB Created: 2021-02-27 20:58:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8ee767e41d8e3bdeb80711f4ce5b62a5 SHA-1: 1edc4c11794e7a4773fa685142faa77fef83c875 SHA-256: 519a243237e446ec64399a2b45968c3358a38bfe13dd42eb996f74b56e6bbcfc
154 Risk Score

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://crophysi.ru/wb?keyword=how%20much%20does%20padi%20advanced%20open%20water%20cost'. This URL is the primary indicator of malicious intent, suggesting a phishing or malware delivery attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/wb?keyword=how%20much%20does%20padi%20advanced%20open%20water%20cost In PDF document text
    • https://cdn.sqhk.co/salaseli/hXOwihC/stickman_archery_apk_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471692/normal_5ffb94485e567.pdfIn PDF document text
    • https://cdn.sqhk.co/xadeviro/gdicYgc/link_s_awakening_steelbook_pre_order.pdfIn PDF document text
    • https://cdn.sqhk.co/ponesigis/hh2bwih/52094162715.pdfIn PDF document text
    • https://cdn.sqhk.co/movumatoz/ghijtjd/64921690784.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/gj6jejf/wyze_camera_app_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/nujizeres/idjjG9z/gosovali.pdfIn PDF document text
    • https://cdn.sqhk.co/dazibewibu/hhwJgdT/21670330804.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454813/normal_5fcbc9301f155.pdfIn PDF document text
    • https://cdn.sqhk.co/sazobenapur/6ghdhco/41189283598.pdfIn PDF document text
    • https://cdn.sqhk.co/migawudewiw/s9iimqm/75498714181.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/jivuxo/62032413009.pdfIn PDF document text
    • http://pasalalu.rf.gd/fajenasirake.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/timavukekigopixud.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/escala_de_apgar_silverman_y_capurro.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_off0000eb2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2F 5396 bytes
SHA-256: 21d8486bdc771cde8a425ce7b84ea4c6b42d9a0a764ab3701026d14caf331506
font_01_sfnt_off0000fd74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD74 11088 bytes
SHA-256: 0fa157b22bc946a1cc1263717d0013f6cbdd918c9f5ad98fbf0c54c3504b6d71

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