Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56c4a2d7cb232ae…

MALICIOUS

PDF

68.6 KB Created: 2021-02-12 02:38:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bb0394770fede15982c445376e991c29 SHA-1: db81d1d9a934b9a57f7cecee12cf228969d61069 SHA-256: c56c4a2d7cb232aebadaa46b4a983582c03b3981d659365fde16ee73e8cd271a
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=evan+moor+daily+science+grade+6+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4426813/normal_6000b043c12d1.pdfIn PDF document text
    • https://cdn.sqhk.co/remudejifi/Wgdigih/wings_and_rings_menu_danville_ky.pdfIn PDF document text
    • https://tupunatuluzike.weebly.com/uploads/1/3/1/3/131383671/9fffa8f90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471960/normal_5feb9d668e280.pdfIn PDF document text
    • https://cdn.sqhk.co/loberutebe/cLyCxii/orange_money_senegal_transfert_international.pdfIn PDF document text
    • https://cdn.sqhk.co/wopiwozaso/hjahdjg/jonasivalefenavab.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/iyienqB/ximelinatevapojuge.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/mozirolinitaje/96770492236.pdfIn PDF document text
    • http://rexawego.epizy.com/20100193394.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/compare_plugin_for_notepad_v7.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/pedepamapababugokaroxi.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/guider_pens_review.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/66298865619.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_off0000ce88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE88 5748 bytes
SHA-256: 98ca9689b4a79546e292cb746a5ccbdd2ab2af8bd66f9f15da10067afd90e033
font_01_sfnt_off0000e21b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21B 10404 bytes
SHA-256: d2752afec45ffd8235a1190f1c2a848edb399040a4f32bd94c017ca1a2f770a0