Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ed1a8d6028e33f…

MALICIOUS

PDF

67.6 KB Created: 2020-10-16 17:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3035ddb1f46cdb062c8a1407ccffaae0 SHA-1: 6aed68a8a0f04bca2d8823446a16dbe4e4964d69 SHA-256: 08ed1a8d6028e33f00146bc540e413271ca4ff433c600d837848f06e252c9508
94 Risk Score

Malware Insights

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

The PDF file contains a URL that is flagged as a malicious redirector. The document body, though heavily obfuscated, includes the same URL, suggesting it is the primary mechanism for luring the user to a malicious site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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://ggtraff.ru/123?keyword=marimo+moss+ball+care+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f88a2c83a06b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5f8814c74f718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f86fae61e679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f87e7074659b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_5f894d8bc4158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f8741dc57bd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f870264d1853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f8843ab6ff2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f89101e8ce47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f86f9b542943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f881965a5e10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f87da860df48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_5f87656330789.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371267/normal_5f89226509c3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/13fa1890-e3ca-466d-a7f7-780e14aa6772/jexisuneke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac91cf00-781b-453d-8db8-60ee6148a2ce/50549064722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a3f2ff4-2044-4cba-b2d5-a63366fd6093/dadiboliferuposunipivagem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/648ca420-891b-453c-95bd-4544cfb75846/3446828620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2206b679-1c98-4917-93a9-c38bca2a54db/38177723422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb514ca2-7438-474e-8bc7-7469753a8f05/81486851282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27721547-f17d-4718-b45c-63a705e17f72/44193048557.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa21d1e-5e13-4dc7-b813-e9313c4e8127/xalutekekamaxejuditatenug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a251c395-c562-49d8-87ba-8a6e7c3f14e6/52648400850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d9b2ac5-e940-4961-86ab-4d913e85dd9d/bekuzikomevixevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/797a6f66-d704-47bf-bdda-d1730d0ebe15/zukelomejijivibopekupid.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_off0000bcee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCEE 5100 bytes
SHA-256: e01a4d6414c2a958d3bb1f452b62a61d95ef86cc190bc4b26cf36ce68583a3c3
font_01_sfnt_off0000ce3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3D 10616 bytes
SHA-256: 83a832440cf5d41357052845993c221163c27e1bb59dc3317db124d7763ea3b6
font_02_sfnt_off0000f24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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