Malicious PDF — malware analysis report

Static analysis result for SHA-256 80594f58bb052aab…

MALICIOUS

PDF

67.5 KB Created: 2021-02-19 12:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bb296f8e3694fcb90122cc425e72efe4 SHA-1: 7375845ec1b88de5edce6952706d6af25ccf1489 SHA-256: 80594f58bb052aab6ef8bb8b7d72537e78b5e13603c527c271222b2e90449e4d
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://maypoin.ru/aws?utm_term=what+is+data+table+statistics+definition PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481155/normal_60039293ec8f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426942/normal_5feff2527c14d.pdfIn PDF document text
    • https://cdn.sqhk.co/jozanafe/ghmyp9u/famivuposomobuxasugepug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_602302234e356.pdfIn PDF document text
    • http://salebox.shop/jizivonasogelaviw0pmtd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416510/normal_5fca0177b44a3.pdfIn PDF document text
    • http://gufutaca1.xyz/28192274820fnjp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410415/normal_5fcf5bfe2a7cc.pdfIn PDF document text
    • https://cdn.sqhk.co/girasufu/frjcicq/hocus_pocus_costumes_party_city.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_60282512bd5e1.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/jumedemimo/types_of_achievement_test_in_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/avery_templates_5195.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/nih_general_guidelines_for_authorship_contributions.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/dragon_ball_3d_games_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/sonozo.pdfIn PDF document text
    • http://www.gallup.com/poll/167645/vermont-no-frequent-exercise-produce-conIn 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_off0000cb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB36 5168 bytes
SHA-256: a6169a27cc76eefec3f1ad8ee9bce2b531848c552bbcc6fb7a838d2f9e8cd5fc
font_01_sfnt_off0000dcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD7 10536 bytes
SHA-256: d4a149856f116104d62c955ac78fa9fe6fa5dba40162a14d6d080e9c0b6e9137