Malicious PDF — malware analysis report

Static analysis result for SHA-256 2236c56d5a2fd853…

MALICIOUS

PDF

44.7 KB Created: 2020-10-02 22:30:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: da0e0ccfbcbb4de9273884d763ba283b SHA-1: 3bf9ec89631e691bd2696e94576e2f90fb628a70 SHA-256: 2236c56d5a2fd8533adb6b5861229694392a1e232fa1b86eff79c9f800bbd785
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/strik?keyword=leon+the+professional+full+movie+123 In PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/buvezotoxub.pdfIn PDF document text
    • http://files.driftset.net/uploads/1/3/1/4/131408117/laludumezeluxavatuf.pdfIn PDF document text
    • http://joruluvad.atlantatuskegeealumni.com/uploads/1/3/1/6/131608016/donidanezevika.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b3d4a27-8383-45b2-94b5-11c4f608f265/sagoxuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a50cbb3a-1144-4856-b344-3367276add39/madosofitulotiritopezag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a064c3c3-4baf-4bf3-b7ed-955088cb06ab/48231407070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/406ee2f2-664e-4172-bbbf-3abb42370df6/34998285106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0149ae25-3a05-4123-8308-0105946b8a04/97975907903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/712fe845-cb85-4bea-8c56-6d05cf5350ba/46297939809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8abe49ca-7e2c-475e-abd7-7cd352a9f3f7/88404174625.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6600 5492 bytes
SHA-256: 984844e29efc72db02153926e21874125077b3cc0b5692d970d3a3b6f914d870
font_01_sfnt_off0000788c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 2240 bytes
SHA-256: a94fc0b04a3ff4da30cea24b3fb8f2fee2c1ab2008078f8bc2ee051ee710afb4
font_02_sfnt_off000082a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A4 10488 bytes
SHA-256: 6018d3454d99786808322355313ab9ccde1103c59898a9ade8e6ce6d97a4b239