Malicious PDF — malware analysis report

Static analysis result for SHA-256 477aeb123e3e4edb…

MALICIOUS

PDF

83.0 KB Created: 2021-01-31 22:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d1c3fda7c8e3fe3aa5c7798da1fc3d31 SHA-1: 14ba05ebacc0d1e85ff5a83cf45571a0d58f5567 SHA-256: 477aeb123e3e4edb041baa366a6df62874d8aae0df3c0b9c58c98d2a7f4b3976
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/aws?utm_term=education+website+psd+templates+free PDF link annotation
    • http://legrand-spb.ru/os_buddenbrooks_portugueshipab.pdfIn PDF document text
    • https://cdn.sqhk.co/devepogisog/ixieUpZ/fruit_smashers_food_truck.pdfIn PDF document text
    • https://cdn.sqhk.co/vigefifobot/NPji1jf/diversification_marketing_definition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_5fec33535f977.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410222/normal_5ff768c88792e.pdfIn PDF document text
    • https://cdn.sqhk.co/dubeminap/faWKhhL/miranda_cosgrove_2020_interview.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403117/normal_5fe84a066a8b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413454/normal_5ff97227ed4bd.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/agjgfML/dr_care_anywhere_app.pdfIn PDF document text
    • https://cdn.sqhk.co/vunalogivefu/fr2obxh/unicorn_runner_2020_running_game._magical_adventure.pdfIn PDF document text
    • https://cdn.sqhk.co/sepunaro/geidjap/52785171145.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/cQijxic/wamuvanudetorigapuvijere.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485153/normal_5fceafa93e69e.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/muvojugejoxip/wovogato.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/23970762726.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_off000108d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D9 5488 bytes
SHA-256: f01b7cbd6b8f64ffe9d46c745d846f8577b6d778a18502d8365a47c8b744359b
font_01_sfnt_off00011b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B80 10512 bytes
SHA-256: f457b273a4554762b0a2b9763207839969fcf4a01c74643644ca375ed379b340