Malicious PDF — malware analysis report

Static analysis result for SHA-256 15026a8e5b210744…

MALICIOUS

PDF

76.2 KB Created: 2021-02-27 18:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 67dab1ecfb55733c393b078947998eec SHA-1: 441a14f74d61499178ec486de2aecf3eb8537539 SHA-256: 15026a8e5b21074420e362c42d0b3f92518a5020a92b39d3bd65192cca4f8528
144 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/award?keyword=how+to+make+a+t-shirt+design PDF link annotation
    • https://cdn.sqhk.co/safubuguva/jhKiaje/walmart_money_order_cashing.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/1GMgdGi/21779132005.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/ighijd1/91650193246.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/gZ0ig09/download_game_the_heroes_of_three_kingdoms_apk.pdfIn PDF document text
    • http://milanbeach.fun/192783470426jsoe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416805/normal_600f4236de913.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepilekot/zjdjdgf/boss_fight_books_resident_evil.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/90579566437.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/iMjhPC2/85526009354.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/gD5uihz/19683803349.pdfIn PDF document text
    • https://cdn.sqhk.co/tipekafomube/yb3hih0/86513994540.pdfIn PDF document text
    • http://xeeewq.xyz/fofuje14766.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/fjjjehg/34337610927.pdfIn PDF document text
    • http://erkutungotu.com/34639248596k06he.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491175/normal_5ff7192e9b99e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ef1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1F 5356 bytes
SHA-256: 84c5b975c927547678fa01bb4c45117a6d8361c87cb43c96df4cd7a9f6235716
font_01_sfnt_off00010140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10140 10208 bytes
SHA-256: a9637335aa176036d4a4ff802c55be4193e490ad3c8059ff41558b5f5132a8c1