Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fa0c4ce5c68fcd…

MALICIOUS

PDF

392.5 KB Created: 2022-02-03 08:07:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 8c78b504c23b7a256a05d7965b6cf793 SHA-1: 0d062ba99e71fa00f85629fcdc31e63aa799a40e SHA-256: a4fa0c4ce5c68fcdef70453348f731f4868b6f56b1755a76cb8548c938eeaa7b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8682

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://fecuq.co.za/XSRYdR1H?utm_term=3+year+projected+income+statement+template PDF link annotation
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/82278b6b26871db049d16ded282b5f4c/42127014723.pdfIn PDF document text
    • http://baihsad.com/userfiles/files/20210726_203634.pdfIn PDF document text
    • http://megalaserasia.com/upload///69258803287.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/91902893893.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/33829440573.pdfIn PDF document text
    • http://khacvietlaser.vn/public/images_news/files/20983882625.pdfIn PDF document text
    • https://www.lucaslobker.com/minor/ckfinder/userfiles/files/punetijarexuxadudowalek.pdfIn PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/firopojogosub.pdfIn PDF document text
    • https://kientrucmoi.com.vn/admin/kcfinder/upload/files/kopite.pdfIn PDF document text
    • https://www.osazovanidps.eu/admin/kcfinder/upload/files/zedarefewatelofi.pdfIn PDF document text
    • https://dragonexpressml.apnaconsultant.com/userfiles/files/35900690142.pdfIn PDF document text
    • http://bm-shower.com/userfiles/files/4930586204.pdfIn PDF document text
    • https://www.aatae.pt/backoffice/assets/js/kcfinder/upload/files/vuliporinaritelekamevibu.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/ded009a701a18ac9aff1d0c716de8ee6/80159363475.pdfIn PDF document text
    • https://majubesar.com/contents/files/xorigejiselokoregogavug.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/welagivalibilerup.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/dec3e43922f2458d63d6bdf59c6a3160/regobesagevipuj.pdfIn PDF document text
    • https://mar3ol.com/Files/files/57519752274.pdfIn PDF document text
    • http://sdsenlex.com/upload/files/fazugeju.pdfIn PDF document text
    • http://znsedu.net/admin/ckeditor/kcfinder/upload/files/nifavugisiwoxigu.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_off0005b6ba.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b6ba.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6BA 16936 bytes
SHA-256: 916cde5dac8c9e0cf640e6d958d33e3b67f2b3be50e6398f3023a5d0e4e721a1
font_01_sfnt_off0005e2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2AF 10996 bytes
SHA-256: 72d13273133c33acb369bfe39e23422d70bfe4bd92c15f4626d2ad72fcb4899a
font_02_sfnt_off0005fc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC29 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9