Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4635b98a94d3a72…

MALICIOUS

PDF

72.0 KB Created: 2021-02-28 20:31:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 73fedd180e2158222f56fe8cde316432 SHA-1: 4b2a7ed3f9a091f7722ca5b2b2fe15a4f47a0fbc SHA-256: c4635b98a94d3a72b02e8f66380beb1d4ce9fc0144ed4a0c767a8f69076afedd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://soxebez.ru/aws?utm_term=are+unmarked+police+cars+illegal+in+arizona PDF link annotation
    • https://cdn.sqhk.co/dolitife/igqighi/fox_desktop_wallpaper_free.pdfIn PDF document text
    • http://fimewot.xyz/nupexajazepalinizukemuv8ejq.pdfIn PDF document text
    • https://cdn.sqhk.co/bopesajan/1gjdhjy/summit_trail_climber_at_31_10._50_r15.pdfIn PDF document text
    • https://cdn.sqhk.co/dexediwiboze/J1LPjdw/ski_suit_womens_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/zitedefew/9hb1giz/xibotakerosidujanusanijir.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwilaj/gijiaDx/talking_cat_and_dog_apk_2._0.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/hgcgfgc/ruzotimuvalixanuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/sebetite/Ea3hj1G/senior_citizens_easy_to_use_phones.pdfIn PDF document text
    • https://cdn.sqhk.co/kobamebexog/CLjfMuB/42029185897.pdfIn PDF document text
    • https://cdn.sqhk.co/lunemitibojo/zjaYPjc/dining_table_set_ikea_us.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/muvemasoxaji/cover_page_template_word_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/10984141443.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/ramawidalonuwovonemijazom.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/how_many_calories_in_panda_express_teriyaki_chicken_bowl.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/82120609401.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_off0000dd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD90 5496 bytes
SHA-256: 60753dcfa6298bda67e2b98fe8ff2480787352dcd6890ecf5e724723525f52a8
font_01_sfnt_off0000f031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF031 10240 bytes
SHA-256: 133508d0f9eea657165a7e001648004a3d912ef557261661bbcc53e53ed41f8b