Malicious PDF — malware analysis report

Static analysis result for SHA-256 d189f14f62d1ad54…

MALICIOUS

PDF

64.3 KB Created: 2021-02-27 16:11:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: be1d6f2191ba7965ed30b74b10413e76 SHA-1: 2702606ea778211cdb77d9151f79be14b4cc299e SHA-256: d189f14f62d1ad54f0b32068c11e7ef1015aee1f0c05735d2c3e7bf9429e538d
194 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
  • 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=bill+nye+the+science+guy+waves+worksheet+answers+pdf In PDF document text
    • http://podipotekoi.ru/nawevivo7971n.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/hbyDIR6/colorica_mandala_coloring_book_free.pdfIn PDF document text
    • http://sodaapp.club/backup_android_without_googleljbu0.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/ngfdghl/realm_dragon_defense_td_hack_apk.pdfIn PDF document text
    • http://ravovenovibu.medianewsonline.com/samsung_rf268abrs_ice_maker.pdfIn PDF document text
    • http://alkostore.xyz/ziputkh9x8.pdfIn PDF document text
    • https://cdn.sqhk.co/vivakawibaki/gdgfift/smash_it_sports_canada_tracking.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382782/normal_600dfc665706e.pdfIn PDF document text
    • http://seamanygau.best/maduracion_placentaria_por_ecografiaui3ha.pdfIn PDF document text
    • http://acupofjacob.com/anker_soundcore_2_bluetooth_speaker_manualvzy88.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/doxifuba/30859382522.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/43757012187.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/tiganufamiwami.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/languidez_de_alfonsina_storni.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/66129029903.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_off0000bd08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD08 5784 bytes
SHA-256: 95962a8eecd34c8de0d0188719a03b984e90eac0adc1f188f03d9c9100b4c2bb
font_01_sfnt_off0000d0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DF 10384 bytes
SHA-256: 1de8e48cad268a79cad72e6989e972df95d1d9a9fea3ad9efb936836dae03ae4