Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f64cf09b8813ea3…

MALICIOUS

PDF

75.4 KB Created: 2021-01-18 03:15:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 8d1155e36e21d686e02830bafe59fa2a SHA-1: 4c9d165437070420c86c9b63883852a951423e1e SHA-256: 5f64cf09b8813ea397cbae137a250638b177323b0cb13b67646e191640cda545
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=safelink+sales+representative In PDF document text
    • https://cdn.sqhk.co/videgogaf/fjigcjg/puwivik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480142/normal_5fdd59f3c94cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471082/normal_5fb4e2535ff09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403274/normal_5fcfb1233a3ba.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/BOTjacH/60918889485.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/hihKto4/39928079041.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/attachment_play_aletha_solter.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/armitron_wr330_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/jameson_legal_salary_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/biostar_2_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/24476799106.pdfIn PDF document text
    • http://nokakegobowu.epizy.com/pink_floyd_breathe_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/vumunerufusove.pdfIn PDF document text
    • http://ruzuzis.rf.gd/kagigededaxojopagosot.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/cb_hair_editor_app.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/waxokij.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/jijasisokalugof.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/descargar_diccionario_oxford_ingles_espaol_gratis.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_off0000e8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E6 5124 bytes
SHA-256: 54b70d2b2c0c58530313763389c7bf7ffbb28a70fd743a3fcbef9ea39befba04
font_01_sfnt_off0000fa6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6F 11428 bytes
SHA-256: df2bcfaaf27300c4ee357a77e4b056fa67f93f532c3b7228f2214a3ac4c1dea2

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