Malicious PDF — malware analysis report

Static analysis result for SHA-256 8257deaa40e7436d…

MALICIOUS

PDF

64.3 KB Created: 2021-02-03 10:22:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 162814d5a9bd20dfe4fde5ade9c4e158 SHA-1: bb9f6b56add068bbd71add09abaa941b6c3cc9f3 SHA-256: 8257deaa40e7436d3d689faa2a12ec19586ad7444cd790ba06e3ff5f7d4e113a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=beelzebub%20episode%201%20sub%20indo PDF link annotation
    • http://khanapoorti.com/fugobagotimolobapowil8o5jh.pdfIn PDF document text
    • https://tomumexajozovod.weebly.com/uploads/1/3/0/9/130969356/wefexutudini.pdfIn PDF document text
    • https://sunejojixin.weebly.com/uploads/1/3/1/0/131071277/linujoniwuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/magatile/bjbxhgR/55404294374.pdfIn PDF document text
    • http://genoray.pro/bipudusugometajubokofoywl4t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450417/normal_5fdeeb6a9fc60.pdfIn PDF document text
    • https://gazasajud.weebly.com/uploads/1/3/4/8/134879445/8315756.pdfIn PDF document text
    • http://tersq.space/pixel_experience_poco_f1_android_10hcmb6.pdfIn PDF document text
    • http://afracheat2.xyz/xegilevb7h3.pdfIn PDF document text
    • https://vilujelirajoki.weebly.com/uploads/1/3/4/3/134378771/d876f29420f3.pdfIn PDF document text
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/5a2dfc53a1.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/biaihif/masiluf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://remigesej.epizy.com/candy_crush_soda_hack_apk_facebook_connect.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/mudit.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/java_string_format_print_boolean.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_off0000c046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC046 4936 bytes
SHA-256: 8145d2ba4125aa152b82db2435fc898ad46972b751db7347cd08fe91a7567130
font_01_sfnt_off0000d128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD128 10128 bytes
SHA-256: edeb927fc8fe3b5202aed5f512d13eb911d907eeeb684619751a0f71c72baa62