Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d0cd71a0106b14…

MALICIOUS

PDF

71.0 KB Created: 2021-12-09 06:55:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 5784dcad6151ab6d53f5404d32964af5 SHA-1: af6ef7680fc706e8276453b9f7e477c64b64bdc7 SHA-256: c5d0cd71a0106b140d5a858755183bd3f69c9ab30337cd5b876757006ea4111f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/8a1ff1e9f1e60be5ed779861eab92728/livifisiwotorukumogaki.pdf In PDF document text
    • https://privatecambodiatour.com/userfiles/file/31418486183.pdfIn PDF document text
    • http://studiopedrazzini.eu/userfiles/files/fowavu.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613df0752c69c---8213456458.pdfIn PDF document text
    • https://littleedupark.com/ckfinder/userfiles/files/fepujuzamexevoxirur.pdfIn PDF document text
    • http://cpghollywood.com/userfiles/files/vokixewagowalawapuzowogod.pdfIn PDF document text
    • https://kominove-centrum.cz/media/files/file/musuwu.pdfIn PDF document text
    • http://topbondtape.com/uploadss/file/telumomevaniwadawite.pdfIn PDF document text
    • http://phanphoiongnhuahoasen.vn/upload/files/88225471031.pdfIn PDF document text
    • http://vibrobeton.by/pics/files/77849114977.pdfIn PDF document text
    • http://mastervgtour.by/var/upload/file/80017173471.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/69724537544.pdfIn PDF document text
    • https://ochronaskory.pl/pliki_user/File/bewemisidotezodok.pdfIn PDF document text
    • http://bbdecontra.com/userfiles/files/fovagoxiniga.pdfIn PDF document text
    • http://xn--38-mlcqjbufcz6h.xn--p1ai/userfiles/file/modopuzenoren.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16193f3d722eaf---kexasegekalivurunux.pdfIn PDF document text
    • http://korea-labels.com/ckfinder/userfiles/files/20936415473.pdfIn PDF document text
    • http://irvinenott.co.uk/ckfinder/userfiles/files/kikakisibeb.pdfIn PDF document text
    • http://faisaltowel.com/survey/userfiles/files/lorazimuxaju.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161a3349d8efd5---vupivamutebexukebiw.pdfIn PDF document text
    • https://lenaoyunlar.com/calisma2/files/uploads/pikipajuwigebik.pdfIn PDF document text
    • http://vers-ma.de/userfiles/file/mogemenevivij.pdfIn PDF document text
    • http://gymostrov.org/gymostrov/userfiles/file/49098437999.pdfIn PDF document text
    • https://zilalcooling.com/other_files/File/76152827416.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619c3d87c5916---pirolabib.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/HKUGBsJGI0E/uplcv?utm_term=problemas+con+nissan+juke+2015PDF link annotation
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/81f6f333209f807e7c26d95b93efc334/dibibumowosazola.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000add6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADD6 11184 bytes
SHA-256: f085171179635c3c250e9a28719acca36f0d7ae65fc88f84ef4615559c32a76d
font_01_sfnt_off0000c803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC803 18532 bytes
SHA-256: 6cc7f7d3b2a6bcad636e411a3fd66e42a198a84f0736981fc4644ca6d265d24a
font_02_sfnt_off0000f816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF816 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336