Malicious PDF — malware analysis report

Static analysis result for SHA-256 550bbb2cbd932c30…

MALICIOUS

PDF

200.0 KB Created: 2022-01-11 06:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: cd5c4f122cea4628e52ef7348f48b625 SHA-1: 6e708ab3a0f8ea7fd7158a7ecc27136eddc2beb0 SHA-256: 550bbb2cbd932c30cf8262a62d07ef37c88beeaae9dfc657d6859eef80c6e6ed
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8152

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://yejiya.com/userfiles/file/99067209165.pdf In PDF document text
    • http://naphogacomposite.com/upload/files/40444752325.pdfIn PDF document text
    • http://solee.cn/ckfinder/userfiles/files/tagajejebubosoxa.pdfIn PDF document text
    • http://www.prctech-th.com/ckfinder/userfiles/files/80679076201.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/3164778ee4f61f960371c180846b6e23/mubegasuwojuzero.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161a18d666fcfc---16218707424.pdfIn PDF document text
    • http://stringladies.cz/userfiles/37413718770.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/xifonavotozetupajiwibul.pdfIn PDF document text
    • http://haqwali.biz/files/file/87896252417.pdfIn PDF document text
    • https://demo-calson.garment-pro.com/ckfinder/userfiles/files/sugotapiforaxiwoselab.pdfIn PDF document text
    • https://www.mnogotrop.com/ckfinder/userfiles/files/xufafoduvasuzufuwikelipok.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161800952eab19---21918339115.pdfIn PDF document text
    • http://maihome.hu/admin1/file/38896847382.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/sizeguvunodubew.pdfIn PDF document text
    • https://gornjastubica.hr/files/32208117112.pdfIn PDF document text
    • http://mmsmarin.com/imgimage/file/28926657032.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/nisajawuvivun.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16189ea193deed---jininunafip.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/2217484783.pdfIn PDF document text
    • http://demignyfasol.com/kcfinder/upload/files/ripekufumazofakaziwolafa.pdfIn PDF document text
    • http://mu-rrrc.com/userfiles/file/gerabuvijavupe.pdfIn PDF document text
    • http://yusungchart.com/userData/board/file/sanobanazatewisebug.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/xPAns0MRe5M/uplcv?utm_term=androidx+toolbar+dependencyPDF link annotation
    • 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_off0002ac4f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002ac4f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002ac4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC4F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0002c2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2F3 10676 bytes
SHA-256: 36081993a967e28eb21a356b93766663d2275fa78295c4a07bba3ae6f368873d
font_02_sfnt_off0002db4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB4F 20552 bytes
SHA-256: 70cb7dd4af04521e6f93473b2e8834fb043ddd7ff8713cc05e977ccf24f2b2b0