Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7628ff5b8b3b48…

MALICIOUS

PDF

73.6 KB Created: 2021-03-02 02:00:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b40c66661ae91af34f116482d9ba337d SHA-1: db752195047ac89564bf5c3cccedaf8e7a16d33b SHA-256: ec7628ff5b8b3b4880c0248a0ddeaaab412f39eed2d6cfb99ee207d71b39c86e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://xajibur.ru/wix?keyword=let%2527s+kill+tonight+lyrics PDF link annotation
    • http://fakts.design/xfinity_stream_on_firestick_update2m9fx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480743/normal_5fc7fd6cb4293.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482625/normal_600432e786e7b.pdfIn PDF document text
    • http://instas.site/stocks_investing_for_dummies1mbir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418368/normal_5fd11a6e3cbb7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423462/normal_5ffff6513ada0.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/d6DnEG4/boat_driver_license_mn_appointment.pdfIn PDF document text
    • http://jurojegame.getenjoyment.net/kaziwudufizerenaxadixite.pdfIn PDF document text
    • http://lazotub.mywebcommunity.org/sedulexejibumorotiso.pdfIn PDF document text
    • https://cdn.sqhk.co/fagiseregu/hjMlOhb/bobaw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417325/normal_6003d1de13537.pdfIn PDF document text
    • http://parrrtner.xyz/what_is_the_correct_order_of_the_percy_jackson_booksxcb92.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/fiZgfgg/siporisukuzikekupub.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/Vjiwifs/82434512844.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/nedijowewoded/52909394094.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/97376677710.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/dazuvatuwowubadizupajak.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/52023661397.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_off0000e57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57A 4992 bytes
SHA-256: 548cce3075a8f399c6067f3632af8f181db6101d8e75a6ae0bd30bac97490c53
font_01_sfnt_off0000f68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68C 10156 bytes
SHA-256: 0f14f5cdf11c16379d4a912640265abb7351e163bd0d703c39cbf34616ec7416