Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef902f0b15a30a21…

MALICIOUS

PDF

36.1 KB Created: 2020-10-28 15:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d9f298357777fcfc125b5a4180a5c6d6 SHA-1: d3eb0808306411b9aaafb332e5026e64da9a24dc SHA-256: ef902f0b15a30a21df1c185a5bcef9ec4ab5c4952f1064d4748ba6387eb2705f
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=paradox+rain+jacket+size+chart In PDF document text
    • https://vabofofed.weebly.com/uploads/1/3/4/3/134337048/ferurug_xazabigul_wakijalov.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/6615122.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/6396669.pdfIn PDF document text
    • https://sixodajumam.weebly.com/uploads/1/3/4/3/134311071/bitopoxexakanuw.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/a2938ea02e9b.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/pulutiwefegoxa.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/3104519.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/ab3f0a2c-ff0f-4e30-818b-7f1ea30e420b/acrylic_paint_colour_mixing_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c539b3ab-0659-4c5c-814a-e1dd7fc4a583/52562529218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc50ab8a-a74e-4a39-9c27-b312baeaa6e7/tofesalonikosabubomof.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/lidepuzofo.pdfIn PDF document text
    • https://s3.amazonaws.com/tagorarib/legacy_of_discord_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/agenda_2019_para_descargar_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77ad191d-c1a7-4cf6-be65-c37b7408cafb/golds_gym_elliptical_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2bdfc2f-1451-4fbd-af44-cb16150ecdaf/9565101596.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/afriland_first_bank_group.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/89487106958.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/nios_506_assignment_answers_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/34706062647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be57b696-56fc-43c1-a4c2-0e67a745a4f4/penetujojelawu.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_off00004d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7A 5256 bytes
SHA-256: ac5ddfc6322e152aa5bbf367c83087e934619a0c3ed7e8b30988b333afdf0175
font_01_sfnt_off00005f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F62 10524 bytes
SHA-256: 322b1296b66bdd3a8e7cb714b525ca9ef8e1cfb2ac47b76b7f08a39978016164

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