Malicious PDF — malware analysis report

Static analysis result for SHA-256 11aa03443e8f2496…

MALICIOUS

PDF

70.4 KB Created: 2021-03-09 04:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 53bd19b346733410dbf961359e1e0e23 SHA-1: 373190aaf7173ef8eb0433f911549b97a4ea6d10 SHA-256: 11aa03443e8f2496cdd20b7c501741356f2f6699d5b65d89f5227178492df26e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/award?keyword=present+simple+past+exercises+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473359/normal_5fee7d8b056b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445869/normal_60046cd529869.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379241/normal_5ff4c730efe73.pdfIn PDF document text
    • https://petizigosi.weebly.com/uploads/1/3/4/9/134903326/mixasidilam.pdfIn PDF document text
    • http://maxobujixeweden.sportsontheweb.net/us_history_timeline_1600s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476301/normal_601dadbd34fd7.pdfIn PDF document text
    • https://nizevamil.weebly.com/uploads/1/3/2/8/132814567/8397998.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/pazorabaxek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466135/normal_5fd28434b8689.pdfIn PDF document text
    • https://fijoxivivuf.weebly.com/uploads/1/3/4/0/134041864/rufojo-xolig-zimewujegomifo.pdfIn PDF document text
    • https://mabedokuk.weebly.com/uploads/1/3/4/5/134582143/vupanibupifun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd556fdc-c5b7-4145-bd22-8b5e32295ae8/nabixegi.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/89499468491.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/lawafofofak.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/setting_of_the_tale_of_peter_rabbit.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/kukif.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/the_women_of_brewster_place_full_movie.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/zisop.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/9247270244.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/nudisu.pdfIn PDF document text
    • http://pujumek.myartsonline.com/meghan_trainor_like_im_gonna_lose_you_piano_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15451ec0-b403-4610-bb01-53ff931f227d/strangers_on_a_train_remake_2017_cast.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_off0000d819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD819 5372 bytes
SHA-256: f0e79e1c229d4b95c9ca10d67f546c7cec8dd139ca0673cb4954850cc7e838ce
font_01_sfnt_off0000ea47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA47 10040 bytes
SHA-256: 657931e73cc2adaf7e42fde03f606e47c7a1e955a03d191175e293e54516446a

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