Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b162c82b16d2c0…

MALICIOUS

PDF

37.6 KB Created: 2020-10-05 04:34:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 71a87d7d6233f8b62805069016c97733 SHA-1: 229eee3dc34c43390a40b8e2901840394898ddf2 SHA-256: 65b162c82b16d2c044d9f2f97defc4241ab82dd7b48200bea6c280992433a8df
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://ttraff.link/pify?keyword=clean+force+1400+power+washer+wand In PDF document text
    • https://site-1037219.mozfiles.com/files/1037219/dutaguxuruxaloro.pdfIn PDF document text
    • https://site-1042716.mozfiles.com/files/1042716/47519711190.pdfIn PDF document text
    • https://site-1036944.mozfiles.com/files/1036944/13513770066.pdfIn PDF document text
    • https://site-1039227.mozfiles.com/files/1039227/kofeku.pdfIn PDF document text
    • https://site-1039644.mozfiles.com/files/1039644/wigorizokitosifigek.pdfIn PDF document text
    • http://lukazezul.jennysparrowworks.com/uploads/1/3/0/7/130775519/177a00.pdfIn PDF document text
    • http://files.squareonegoodsco.com/uploads/1/3/2/8/132815154/tasawaz.pdfIn PDF document text
    • http://files.janiktremblayhomeopathie.com/uploads/1/3/1/4/131482823/lenuzix.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/124da625-fe07-492c-a3a4-56ad73b79ab5/73905165410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00b8146e-c85b-4497-a1e1-3187b281d334/zisanesalufotesavuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d53f736e-8f23-4833-bc1f-a3793a958d67/20132772405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0f29b37-ad12-4d49-b636-d9ec528096c5/dibarenagov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b4fa07b-cc55-4dfd-a2d7-38ad6bd028dc/tuvalapunus.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_off00005490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5490 5524 bytes
SHA-256: 5d6fab1f5a4c1f54920b896d371fceac86f592b306c8d4995286336f572c6c2d
font_01_sfnt_off0000676b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676B 10028 bytes
SHA-256: 458021d6e6311e302350699109353d1b49a15fa7e176f86a004d4ad66bdaaa9e

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