Malicious PDF — malware analysis report

Static analysis result for SHA-256 110f8ec96ac5e29a…

MALICIOUS

PDF

62.1 KB Created: 2020-11-23 12:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 504975be3219e25b50ca982e09a160cf SHA-1: d96c076916eeba2b15c35b94a4a3ac77d16a8d46 SHA-256: 110f8ec96ac5e29af7a7fc97822060ec65dd60063e38c8aa981100ac6c214705
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 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=scholars+pack+dnd In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5f88176facfd4.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://s3.amazonaws.com/nosepevozux/lokukeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cea7a24-8f3d-4188-a75d-f765431f2312/sadusigosokemofipadizon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7302f32-7cbb-4ec5-9448-85d60f89d84b/grupo_funcional_de_la_fructosa.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/wavelength_and_energy_are_inversely_proportional.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/nivugadidizuxurowux.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/59495275691.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/41565920272.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/26454452365.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9642f250-1328-457d-8a74-4cd9ac794544/foxubaxadajeziripekefajef.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/53507376847.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_off0000abfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABFA 4872 bytes
SHA-256: ac66a6f5ee52fb585439352742b803f496fe1ae32a322cafadb26f35c0e8e864
font_01_sfnt_off0000bc5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC5B 9892 bytes
SHA-256: 43e9f07a662f0a9e6f6b48e0664ce33eb44eda1c7289cb6fc0f1265f52a118ef
font_02_sfnt_off0000de36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE36 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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