Malicious PDF — malware analysis report

Static analysis result for SHA-256 7858ed28323f9616…

MALICIOUS

PDF

72.1 KB Created: 2021-02-27 02:03:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3eacb194d7d992b7e85316a989442b1c SHA-1: 59679ff352fbd04a6b35ca0e91fad32f2f05de2b SHA-256: 7858ed28323f961615ef7d7315545f61c312db36ce4c583a51059935bfad9422
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/award?keyword=breville+mini+smart+oven+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377935/normal_5ffa59696f921.pdfIn PDF document text
    • http://1xbet-football.fun/twilight_struggle_realignmentwqlcw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383929/normal_5fc56e27738ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_600e5c757f0fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467032/normal_601cf046820b0.pdfIn PDF document text
    • http://jujudinopuloxam.22web.org/lukiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413696/normal_5feb4f7b6796f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387813/normal_601782c0594fd.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/kobaladoxidipoperewonexuinp31.pdfIn PDF document text
    • https://cdn.sqhk.co/givesaxi/7Uiyjfm/47138915935.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427529/normal_6004b0ad71bd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423428/normal_5ff2249fb9d87.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/geChhNn/novenotesalejopigube.pdfIn PDF document text
    • http://canonsburglake.com/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojixefem.epizy.com/miwepun.pdfIn PDF document text
    • http://tagugatukosag.epizy.com/black_metal_albums_free.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_off0000df2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2F 5032 bytes
SHA-256: 76a4be01fa287618ceba499ef6b2d9f934de4641614542b2b3a636754fdbc02c
font_01_sfnt_off0000f046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF046 10312 bytes
SHA-256: 79e1683a33c92d220a96c14eb79d9f9b4fc6d73067060162c201db95cd09dbd6