Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce92662cddad4ffe…

MALICIOUS

PDF

69.2 KB Created: 2021-02-22 01:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6b7eaaff7b29c95569e5f44b78eb16ff SHA-1: 4b13d67fd4f823629dd39196f29dd3da7b86f85c SHA-256: ce92662cddad4ffe8d6243bc710baee08cf22c578fe9f26d9239542cbbab7f1e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=demonstrative+adjectives+spanish+quiz PDF link annotation
    • http://rexuxudal.22web.org/92048379463.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462350/normal_60055801cf364.pdfIn PDF document text
    • https://vaforiduzaxofa.weebly.com/uploads/1/3/4/3/134367440/ccd356a37.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/kezemiradigu/vuxosopakaxesosopim.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/facebook_twitter_icon_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/bonds_of_the_skies_premium_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/fevixefejejaduputizopivu.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/cover_sheet_font_size.pdfIn PDF document text
    • http://godutiliwaganos.rf.gd/pintura_acrilica_blanca_manualidades.pdfIn PDF document text
    • http://merigodivibamot.rf.gd/android_vpn_application_source_code.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/batman_wallpaper_hd_for_mobile_free.pdfIn PDF document text
    • http://velewetuwo.rf.gd/piguduvonajalutu.pdfIn PDF document text
    • http://wuzorijo.rf.gd/mathematical_economics_lecture_notes.pdfIn PDF document text
    • http://miripiwamaza.epizy.com/resumen_corto_del_libro_el_dador_de_recuerdos.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/69196273179.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_off0000d0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E2 5592 bytes
SHA-256: b2afd19a6b1f39d57a1d6a46aaccf14ce0e51441a7f496010938ae0b48bf0cc2
font_01_sfnt_off0000e3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D3 10636 bytes
SHA-256: 5c309cbe8fcc2ef5dc1f2db7df7fb8bdf56b27a005f189cfe754cdc94a5dd0a2

Open this report in the interactive analyzer, or submit your own file for analysis.