Malicious PDF — malware analysis report

Static analysis result for SHA-256 37321295980ac47f…

MALICIOUS

PDF

72.1 KB Created: 2021-02-22 11:59:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e2459953c83e56348f403228de255214 SHA-1: 3777de896d722259635fe73b8f7ce6ef24ee07f2 SHA-256: 37321295980ac47fd3447c8d1052e60b7dbe06491bd53426e811a4520113067d
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?utm_term=arris+sb6141+configuration+page In PDF document text
    • https://cdn.sqhk.co/sabepakofo/Iciilii/cashflow_game_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/jipogidara/hzxheji/smart_tv_40_inch_4k.pdfIn PDF document text
    • https://cdn.sqhk.co/wufaluvete/e0VJ14H/piano_keyboards_for_sale_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375525/normal_601023f88d869.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/hg6bS4j/photo_collage_app.pdfIn PDF document text
    • https://cdn.sqhk.co/gorubabor/jgJ5DtR/uber_eats_driver_sign_up_not_working.pdfIn PDF document text
    • http://fishland.store/donumoxobokidese59o8j.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/kUhcQjd/vozutawivuzolibaxavoja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilidezokap.epizy.com/zaxesowokoziwaba.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/68061919479.pdfIn PDF document text
    • http://fogosapew.epizy.com/punctuation_worksheets_for_11_plus.pdfIn PDF document text
    • http://duzesonugineku.rf.gd/el_almohadon_de_plumas_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/jurova.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/81508423342.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/nowepojo.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_off0000d98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98E 5572 bytes
SHA-256: 4376e8c667aa656646ef86dd6926e0f3c8c378bf8fef587afc02b06824a8bd39
font_01_sfnt_off0000ecae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAE 11480 bytes
SHA-256: 73d5ee27b2dedcce4445ac286d8841f22be7399003c8586b5b8ec652f7fbf0fa