Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f2188b83ed404d…

MALICIOUS

PDF

339.4 KB Created: 2022-02-01 12:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: b39dd147b9c3215bdd7123923cc72db1 SHA-1: c1b1f48d58a15e1b2c5fa13c7c671d53177f6097 SHA-256: a4f2188b83ed404d6dc3553ef84e40f366e26561316be309f341d0efc47adead
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6782

Heuristics 8

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
  • 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=adobe+pdf+online+review PDF link annotation
    • https://vos-web.nl/userfiles/file/ligikezerisamujup.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/jimeniranobo.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/68175342701.pdfIn PDF document text
    • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/95939589369.pdfIn PDF document text
    • http://myxroad.net/upload/userfiles/file///wotigafukuzulavidemejazu.pdfIn PDF document text
    • http://miyisz.com/mingyi/images/userfiles/file/zapirajekakobobixapuko.pdfIn PDF document text
    • http://baota84000.coco1490.com/upload/file_folder/file/fagonurozolobugux.pdfIn PDF document text
    • https://www.ssemusic.com/kcfinder/upload/files/tiwapavuwilesukafolo.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/54475834244.pdfIn PDF document text
    • https://bursakaynak.net/userfiles/file/bonilezajozarij.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161709c51c4b52---22379016447.pdfIn PDF document text
    • http://prefinancovaniehypoteky.sk/res/file/89938303434.pdfIn PDF document text
    • http://spalovnachemolak.sk/userfiles/file/kerikanojabuwokakubamiw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c5fbd1b69b8---78675808396.pdfIn PDF document text
    • https://madame-tina.com/ckfinder/userfiles/files/zofetefopiwejuxugetidagak.pdfIn PDF document text
    • http://splhardware.com/UploadFile/file/2022011013475173499.pdfIn PDF document text
    • http://chinajnbt.com/images/upload/File/xerewe.pdfIn PDF document text
    • http://fermobkorea.com/userfiles/file/20220201134346.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/73347823589.pdfIn PDF document text
    • http://www.nbc.com.vn/ckfinder/userfiles/files/54535150915.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/vimalijuzokolowedibuwazi.pdfIn PDF document text
    • https://miraclechuppahs.com/userfiles/file/lonironepagoxezola.pdfIn PDF document text
    • http://bradzo-ep.com/uploads/files/kasitepixijezasitupewij.pdfIn PDF document text
    • http://nwatchonline.info/userfiles/file/jejoburanubifuxufagefav.pdfIn PDF document text
    • http://niezapominajkowo.eu/userfiles/file/betekidivokemisemefuwo.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/fazudosefep.pdfIn PDF document text
    • https://dialogueinpraxis.net/files/docs/17130454216.pdfIn PDF document text
    • http://tdybio.com/uploadfile/file///2021112302551242.pdfIn PDF document text
    • http://kino-cosmik.ru/sadm_files/99432340363.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161b534440468c---vibur.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/zekazumubugoboguf.pdfIn PDF document text
    • https://harshahometutors.com/uniformkontakt/userfiles/image/files/tuxolaworokirari.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c678dfd1ccf---66007716535.pdfIn PDF document text
    • http://master-vin.ru/files/file/badugor.pdfIn PDF document text
    • http://webursitet.org/Files/file/79733727378.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_off0004e229.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004e229.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E229 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004f944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F944 17340 bytes
SHA-256: b8a7269efed496dfa2f4a618607d5220fcb5be2a0bfab4fefc45453591f88d21
font_02_sfnt_off0005265d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5265D 10336 bytes
SHA-256: 39354c11e0d310e641e7352094953787037a78426a27b9f8a523ee55cd91e7e8