Malicious PDF — malware analysis report

Static analysis result for SHA-256 39357476200a26e5…

MALICIOUS

PDF

71.2 KB Created: 2021-02-15 21:51:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d6789ebc63a37393158b3ebb46100fa1 SHA-1: 64c3e9863b6e7e1210ef99217a7ad045965f2162 SHA-256: 39357476200a26e586a1114679bf96ba8997dd45caeb5ebf74be0dddaaf2bc2a
196 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=prime+choice+auto+parts+ebay PDF link annotation
    • https://nodejobirutita.weebly.com/uploads/1/3/4/7/134748641/nuxoruvugivix_doxepipuda.pdfIn PDF document text
    • https://cdn.sqhk.co/xelalizogim/ajc8gdL/29301817138.pdfIn PDF document text
    • https://tatuwimo.weebly.com/uploads/1/3/4/8/134882860/lawexix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377414/normal_6027a14074255.pdfIn PDF document text
    • https://cdn.sqhk.co/naxenunovus/jrPgihc/87079654747.pdfIn PDF document text
    • https://bojurejid.weebly.com/uploads/1/3/4/8/134887271/kuwosogevosu.pdfIn PDF document text
    • https://cdn.sqhk.co/vivepovugeli/HqhaSTf/the_dark_knight_joker_4k_wallpaper_download.pdfIn PDF document text
    • https://cdn.sqhk.co/woledowo/P58sgcH/serobutetivopino.pdfIn PDF document text
    • https://cdn.sqhk.co/xanapaje/zsa2gdT/worut.pdfIn PDF document text
    • https://cdn.sqhk.co/xaleteser/xffribc/75282111962.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/toniseligiwuzux/ecatts_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/wufulow.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/how_are_you_feeling_today_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/giwefenazesesetalovigij.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/physics_30_worksheet_3_conservation_of_momentum.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/polewimotakeriwifozo.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_off0000d89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89D 5384 bytes
SHA-256: c2b84861aeaf91ae41da53f188b5e076702481b40b9c080fe32b3c038102b270
font_01_sfnt_off0000eac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC4 10896 bytes
SHA-256: a3a12684dc5425465a384e0f5694be903302bca3f335307af18e8358fc2b931f

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