Malicious PDF — malware analysis report

Static analysis result for SHA-256 33457bd1ba73a243…

MALICIOUS

PDF

47.2 KB Created: 2020-10-02 08:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: a2e14e0a5d15d61536cb4734f56dccf5 SHA-1: f31785a032361a6a07c04c4d09feb41d8405cedd SHA-256: 33457bd1ba73a24344ab8c4dc00f22f4d7a515ccca33f6dd9b7ea0f900ecd844
124 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/pify?keyword=code+vein+presents+guide+reddit In PDF document text
    • https://site-1036659.mozfiles.com/files/1036659/sanebaxezajavozete.pdfIn PDF document text
    • https://site-1037246.mozfiles.com/files/1037246/20208933218.pdfIn PDF document text
    • http://nuxiboni.firstcrcreddeer.ca/uploads/1/3/1/1/131164250/salusurupogup.pdfIn PDF document text
    • http://files.jyfit.com/uploads/1/3/2/3/132302896/bilimefumul-nagorogovumol-tizosanugawaxu.pdfIn PDF document text
    • http://kirupere.lonepinelogandtimber.com/uploads/1/3/0/7/130740537/peges.pdfIn PDF document text
    • http://files.catrinmarichal.com/uploads/1/3/0/8/130814863/tavoti.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/4e926029-fb08-41f6-aca9-d8fb35c0a69b/lusezowoxono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b6292e0-9142-4db4-889b-b7f77c5dfabd/detilosuwam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3814d2ec-199d-486a-ab9f-48f9c4a5cb9f/pubosapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c70820a-25d8-4b42-a2e4-605e31a1ea06/77976387664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d44fc3-dc8c-431d-92f1-4211ae5ecc2f/32998008434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7928/5401/files/ihome_wireless_multimedia_keyboard_and_optical_mouse_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5202/7041/files/avi_video_converter_mac.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD4 4848 bytes
SHA-256: 104a66860d50e3074941b765fa5fb38ae4399a539b27df6092641a74c6749af6
font_01_sfnt_off00008b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B68 10712 bytes
SHA-256: bab4f4caba30075d4c9dd47752dd0723ca54a34bfb27a300ba5f3922d07a43ad

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