Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a25fdcbc298d6b…

MALICIOUS

PDF

79.6 KB Created: 2021-05-01 06:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc3b4ea93dd66bcf079db8e8e9d1264a SHA-1: 912cb24557c436843f2416e5ecf5ea08f3a7b8d9 SHA-256: f0a25fdcbc298d6b3d4179b201e13e38b8e2caa0fdbb595a419d933809d4d723
154 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 ClamAV and 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 0.9998

Heuristics 4

  • 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.
  • 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://yafferge.ru/strik?utm_term=education+and+democracy+quotes In PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/6c50ddfb8a.pdfIn PDF document text
    • https://nebowepef.weebly.com/uploads/1/3/4/4/134483035/ziwenukoleki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474722/normal_5fcb55792d75d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452374/normal_5fdaebc90abd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404497/normal_60520825794b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_60605f03b695c.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/QPjiTie/wuduvajobumabojemazasit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446045/normal_6010462419440.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/gc58ysJ/amazon_fire_tv_stick_lite.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/nedijowewoded/7151827758.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/mexodizivevemaxabu.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/monthly_family_expenses_excel_template.pdfIn PDF document text
    • https://43e3b293-20b6-4b74-9f7d-0eefffb4d2df.filesusr.com/ugd/11595e_27f8d710a14b40ef898588595ba20d32.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8961d4a2-a2fa-4964-b47c-3ccd7be6c698/2003_saturn_vue_v6_fuel_filter_location.pdfIn PDF document text
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_58cfc34b4cca443aabbc18afc8163462.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/avast_license_file_free_2038.pdfIn PDF document text
    • https://6c639bf1-704a-4500-b661-329758898742.filesusr.com/ugd/02d620_8e31e5c6d9c24a38881c490cf6b5a44a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2603671f-b22a-471c-b59a-d92990fbe2fc/how_to_reset_a_samsung_dishwasher.pdfIn PDF document text
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_0be5d5aa59414e809c42933f06d46e6a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d59515-f9cd-43f8-bb2b-713ed1cfe3e8/newt_maze_runner_actor_age.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_off0000f75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75F 5240 bytes
SHA-256: 720bd0edca065ced860a60cada028ac8e325b23cd6683c9a933a1fc396557c0b
font_01_sfnt_off0001091c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091C 11212 bytes
SHA-256: b921797539b87116634b7c8049312b594024c3ac7e70434241f23264804c1b42

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