Malicious PDF — malware analysis report

Static analysis result for SHA-256 7393fb3019d60947…

MALICIOUS

PDF

87.0 KB Created: 2020-12-26 05:11:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 226f626d0dc0efd9fd5e43572a7c6432 SHA-1: 2c18bd769e1f6ef52dddf73c0efe4f5bf3022afe SHA-256: 7393fb3019d60947f801ccd62d1ecdaff6fe916397f0470c80662a1ca509d04e
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://ggtraff.ru/wb?keyword=world%20championship%20cycling%202019%20favorites In PDF document text
    • https://cdn.sqhk.co/xizowabik/gjjh4Po/mujas.pdfIn PDF document text
    • https://cdn.sqhk.co/jajotulix/eicjhhg/54417000968.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/4f0ec021-963b-4fd7-bb97-38105f5a0d52/the_expositors_study_bible_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/44082027380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6462d5b-c6f2-43e9-a1a2-2fe57ec1ddc5/sans_boss_fight_scratch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/652bfa3b-b283-4dd9-9c57-b402d3227947/limivikaxupukel.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/analytical_chemistry_questions_and_answers_for_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/gusajaguropogigiku.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/fexutopalazevufulufor.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/13564715080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b5bd1e-e0e7-4228-b9bc-34c1f7eae03b/fivije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d9a961f-4dbf-48ed-9aef-5de0f7987d4f/sonuvasodarojazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b3f84f3-f158-4b28-84ee-6a283c7a3cf6/pejokuzupusit.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/ccna_200-_125_vce_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50e2f1c1-c6b6-49af-bb31-023191efd7bd/sonic_corn_dog_nutritional_value.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/sapitepetexini.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_off00010f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4D 6224 bytes
SHA-256: 6dec24188c34d13954837db592766ba24a7566d84d5f153680cd3820efe3706f
font_01_sfnt_off0001246f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1246F 13012 bytes
SHA-256: b4d4cd47a4307c1e0e1852937175c8875ab107216416a0ea7cb9fa3e2563830a

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