Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b0a8e3455d3b45…

MALICIOUS

PDF

281.2 KB Created: 2022-03-12 21:08:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 19c61d8e4c273c66dd1ffb847c1ef830 SHA-1: 4875a5fd6b4d78a6ea9e47e77d8ec4572e15f22e SHA-256: a8b0a8e3455d3b454cc87c0b6b9e76b00f43309d938df6cab467dc6de4271dce
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6517

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://madmojo.com/fckupload/file/wofibunowugutidab.pdf In PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/ee90cd0adf0be4237f3ed8e6aa085c4b/7370772572.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/77317551333.pdfIn PDF document text
    • https://dla-pracownika.pl/pliki_user/File/73645023395.pdfIn PDF document text
    • https://ventadeterrenosurbanos.com/userfiles/file/15414550802.pdfIn PDF document text
    • http://davostravel.com/upload/files/xovakukozenuxufuluro.pdfIn PDF document text
    • https://seo-methodes.com/userfiles/file/sezaj.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/162007620df4a6---widafazaromewopiketekux.pdfIn PDF document text
    • https://heks-tech.com/app/webroot/userfiles/files/74221118306.pdfIn PDF document text
    • http://dom-2000.ru/ckfinder/userfiles/files/80672214062.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/a94b3ae88013b0419f16756c59e0a107/68425354888.pdfIn PDF document text
    • https://firmabudowlanawalczak.pl/web/uploads/files/15865883548.pdfIn PDF document text
    • http://specialcats.nl/media/files/49275312483.pdfIn PDF document text
    • http://dc-a436c1f93717.abmextranet.com/fckimages/file/30066092668.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/cl9f5v1m2johfnop2tvad1up30/guxulivazudexe.pdfIn PDF document text
    • http://neowork-rh.com/userfiles/file/zonibomiraliludupasaxa.pdfIn PDF document text
    • http://dakmoto.cz/obrazky/file/83573733832.pdfIn PDF document text
    • http://tumwebthailand.com/ckfinder/userfiles/files/vuxiges.pdfIn PDF document text
    • http://www.kirmatas.org.tr/kcfinder/upload/files/xeritoru.pdfIn PDF document text
    • http://kondicionery-domodedovo.ru/upload_picture/file/48235062939.pdfIn PDF document text
    • http://balone.net/_upload/file///74574137248.pdfIn PDF document text
    • http://sossurfshop.com/cliente/conteudos/files/68189326435.pdfIn PDF document text
    • https://getadoc.in/ckfinder/userfiles/files/pulexevijufozawalukopamag.pdfIn PDF document text
    • https://ncltandatbar.com/home/ncltandat/public_html/dowalumniusa/ckfinder/userfiles/files/jagesuw.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ff126356ee9---nuroxowes.pdfIn PDF document text
    • https://lazav.co.za/XSRYdR1H?utm_term=budget+2020+speech+pdfPDF link annotation
    • http://biosafety.biz/ckfinder/userfiles/files/97426369655.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16204d17b38800---17951653275.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0003f3c5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003f3c5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F3C5 19376 bytes
SHA-256: 9d49434f45ba2af2838bdd0f8bf800c54cd5602d2555847562c6d79f022d66ed
font_01_sfnt_off00042605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42605 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00043d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43D25 10668 bytes
SHA-256: 95ea3ef0574650da637508e1dcba05929117d53cedd006f714f9a29f2ecb65fc