Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd4d4c66e922dacc…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 22:00:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c46be0059b1b1bb0bd883a0149ae9fae SHA-1: 24d9d1d2659209b3f33365541079d86285c8ae7e SHA-256: cd4d4c66e922daccb86e3c798ddc5388e93a1bee5eae63799c8d6f7b12a046c8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=the+copper+cycle+lab+answers PDF link annotation
    • http://mujudesuxiropa.sportsontheweb.net/making_money_online_surveys_canada.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/76242832924.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365545/normal_5fce252002d0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_5ff68569792ff.pdfIn PDF document text
    • https://cdn.sqhk.co/japuwejede/ggjeGgd/78366263918.pdfIn PDF document text
    • http://lesorurudefige.iblogger.org/62700979641.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416940/normal_5fdf04844f26b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414672/normal_5fe57151233e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_603962312ae20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450351/normal_603721259f0d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fubavinexazixo.onlinewebshop.net/how_to_connect_tv_to_studio_monitors.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/rebibizirewewewonib.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/bukotoxodopawo.pdfIn PDF document text
    • http://bupujipa.epizy.com/84123105057.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_off0000e221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE221 5304 bytes
SHA-256: 61b3e8e772a2b4ba1d5b1508f599ab88ece5367da980d44ea0e8dad0d4f4a952
font_01_sfnt_off0000f436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF436 10264 bytes
SHA-256: fffbfe76298ed01dc935a8f71e571733ba2ffcc4847008a44e42f63d1f3c6c6b