Malicious PDF — malware analysis report

Static analysis result for SHA-256 58bf6752a3052e02…

MALICIOUS

PDF

52.2 KB Created: 2020-11-09 04:14:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e791d2f65b7f7e37b8ed61e4a005172e SHA-1: 30415610af9ff8c73d60034b03328b5a65a24d7f SHA-256: 58bf6752a3052e02466a6a2153506099877f7676c3f90226aa6aca8bff5fd2af
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=cheyenne+property+management+group+rentals PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418972/normal_5f9e3d9677a3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408702/normal_5f93990e4cb3e.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/0305a37e-6634-4e7d-b5cf-8f47660ea239/tadedarejal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31a08d33-7bb5-4ebe-97be-36fb02e8475a/74729373633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d77f0c-d55d-46f5-974a-8642754cb6dc/74250063717.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/honkai_impact_3_guide_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/97745144469.pdfIn PDF document text
    • https://s3.amazonaws.com/tifemuma/hudson_ma_school_closing.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/rig_veda_bhashya_bhumika_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a0781a9-5eef-47e9-8458-4278bc8e765c/7184657546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2968799-343a-41b7-bafb-69060b1a71ac/94128685386.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/answers_to_questions_youve_never_asked_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/867eee41-169d-4ad0-ac78-89f7af0ab1f1/the_lorax_book_and_movie_comparison_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/minecraft_infdev_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/duforori.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_off00007f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5F 5192 bytes
SHA-256: 49f988f9af9e87ce45fce6769c75cae4ea360df35d673859e5e0b036a1b86a5b
font_01_sfnt_off000090de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DE 10792 bytes
SHA-256: 10ad8e6ea7c30a0250f39f55f866671e4b594f9f2c44747697f0d7e634e137bf
font_02_sfnt_off0000b587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB587 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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