Malicious PDF — malware analysis report

Static analysis result for SHA-256 552b48226d44e854…

MALICIOUS

PDF

403.8 KB Created: 2022-02-05 01:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 3378ed5578839b23c4ab0ea056ccf7e7 SHA-1: 6b2b41fdf4c30fd09c2bba9b3fbee945fbabc13a SHA-256: 552b48226d44e854dcbb6bfe46e2cfa413e1066c90ba6546aa1707cbbe3dd491
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5598

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://loheb.co.za/XSRYdR1H?utm_term=constant+contact+templates+free PDF link annotation
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/1d6297b2c36f381c4cbb4fdf585e89a8/22845022586.pdfIn PDF document text
    • https://mangalargalux.com.br/ckfinder/userfiles/files/penuxadagifi.pdfIn PDF document text
    • http://www.asbea.org.br/assets/plugins/kcfinder/upload/files/61224956108.pdfIn PDF document text
    • http://balashixa.inhome360.ru/admin/ckfinder/userfiles/files/37195286695.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161525bbe261d2---25067912680.pdfIn PDF document text
    • https://lammensfilip.be/uploads/files/faxuj.pdfIn PDF document text
    • http://powerfalcon.net/uppic/files/kamubapivisaxuzi.pdfIn PDF document text
    • https://bizimpin.com/calisma2/files/uploads/5841922118.pdfIn PDF document text
    • http://www.vegagastro.pl/upload/file/rezuxisuzabogaxipame.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/r672gfb2gpui1pq9uqp57hi96a/bijaxef.pdfIn PDF document text
    • https://zlato-stribro-investice.com/upload/files/vopivuzuxowub.pdfIn PDF document text
    • http://ekkerszerviz.hu/userfiles/file/81301398288.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161983c7e446e2---xamopunakotewabexoxek.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161368ead52cef---jarejekama.pdfIn PDF document text
    • http://phongbepfagor.com/userfiles/file/68691058947.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160fb46f1a757a---47647161291.pdfIn PDF document text
    • http://tpfish.com.taipei/archive/upload/files/54710758473.pdfIn PDF document text
    • https://argekaucuk.com/nbg/upload/files/nikujamepukugakad.pdfIn PDF document text
    • https://liguecasa.mmsfoot.com/stock/file/jawokupoziwofapemotof.pdfIn PDF document text
    • https://cosonnguyenthanh.vn/webroot/userfiles/files/kegekudigevusabiwiwaf.pdfIn PDF document text
    • http://aibasylhet.edu.bd/app/webroot/ckfinder/userfiles/files/nugomizotafedukevegugap.pdfIn PDF document text
    • http://udokutscher.de/gfx/userfiles/files/netut.pdfIn PDF document text
    • https://agt.twwebmarket.com/ckfinder/userfiles/files/36154686281.pdfIn PDF document text
    • https://corumosmanlimakina.com/js/ckfinder/userfiles/files/64711281804.pdfIn PDF document text
    • https://opescom-store.com/uploads/FCK_files/file/kitisejimubikuzu.pdfIn PDF document text
    • https://rmp-traueranzeigen.de/cms/files/zuzizaxil.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/161b5b66e82934---mozig.pdfIn PDF document text
    • https://nistd.in/userfiles/file/19605780619.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/86bfe8d69919fce1f98443a8424ee034/wobile.pdfIn PDF document text
    • http://www.520amis.com/upload/files/pasilu.pdfIn PDF document text
    • http://azizolace.cz/images/file/fabobux.pdfIn PDF document text
    • http://bsinteriordesigner.com/userfiles/files/xusidekeku.pdfIn PDF document text
    • https://samarthanamparisara.org/apadmin/uploads/userfiles/files/94492231784.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/76070243148.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/musekevi.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/83847368880.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/sufukevuvewuzow.pdfIn PDF document text
    • http://pactolous.hu/upload/file/9371829072.pdfIn PDF document text
    • http://koreabulk.net/userData/board/file/madonotitaxosabotovi.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_off0005e3b9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005e3b9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005e3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3B9 10580 bytes
SHA-256: 8ff2cb80e7c6eb3e14451a698fbee89f4c08a3e27992ca31773b38b95612dbc5
font_01_sfnt_off0005fbeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBEB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00061308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61308 17040 bytes
SHA-256: ab090720bc5d8e7e833c0d75e7122d416d8d364b544859ec4bc989ddd0867c45