Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e37db397f435949…

MALICIOUS

PDF

68.3 KB Created: 2021-03-02 03:07:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 423298ea6f85e05296f01e5bbae2f708 SHA-1: c007e581bdd94e7c0369e8c8bff4fb19ed74d68c SHA-256: 1e37db397f4359493a7f9c767f91f31937877aeed3a353ec411ca6c7b51f6d44
176 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://druttle.ru/wix?keyword=apk+file+editor PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389358/normal_5fcfa72fc0348.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/gfhe8ii/48099814101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402247/normal_60067d642525c.pdfIn PDF document text
    • http://dom-bita.org/what_jobs_pay_six_figures40zgm.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/dMtijTl/56540832108.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/giSZwqH/82953716967.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/mA1ihge/southwold_maize_maze_discount_code.pdfIn PDF document text
    • https://cdn.sqhk.co/towafeniruje/jggjPij/vipomidanunuxuwesig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427828/normal_6012b343eb629.pdfIn PDF document text
    • http://expressday.online/telapazomukorewuka5nza3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408993/normal_603c50d78515f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_6037797585b92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445558/normal_5fed199502114.pdfIn PDF document text
    • http://1offpark.xyz/nemasifafobeduremafugavah8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490950/normal_602a3795cefb6.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_off0000d24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24D 4700 bytes
SHA-256: e773ba01c057349797f7f699076cbdc22bf27b8d84b8a9873a227c3e82c97d95
font_01_sfnt_off0000e25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25C 10016 bytes
SHA-256: c58fd9b4ccc9ac637d18b581d1ed8d73dd500943683298491f3e6e07c2c74134