Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8f0f7dc44fc9f5…

MALICIOUS

PDF

76.6 KB Created: 2022-03-29 21:32:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: a5b93bfb754cb38267a62c227ceb198b SHA-1: 65a0082d175a4448df2d797abe03459de67a18ac SHA-256: 2c8f0f7dc44fc9f556b4bfeb90bef6abd293a80d8c23bdfb0ecf7bfe788b95c5
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://cafij.co.za/YmrXLWy8?keyword=cuanto%20es%20150%20gramos%20en%20tazas%20de%20azucar PDF link annotation
    • https://kuparalaler.weebly.com/uploads/1/3/4/6/134693450/jejevatazulifozop.pdfIn PDF document text
    • https://frischgeschluepft.de/kcfinder/upload/files/55624421033.pdfIn PDF document text
    • https://mejiwixibunoxu.weebly.com/uploads/1/3/4/4/134402053/mejomogudo.pdfIn PDF document text
    • https://futisukafasuku.weebly.com/uploads/1/3/5/3/135345320/jijalobon_venono_kejilivepugog.pdfIn PDF document text
    • https://tikiruwilowu.weebly.com/uploads/1/3/1/1/131163793/wesewige.pdfIn PDF document text
    • https://vasukoxenubepez.weebly.com/uploads/1/3/4/4/134475355/c6cf155bf0f.pdfIn PDF document text
    • https://gugabezari.weebly.com/uploads/1/3/4/5/134577353/51bedbae16243.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/161ff6123a90a1---repotuporawulam.pdfIn PDF document text
    • https://tapegijenokog.weebly.com/uploads/1/3/4/3/134376615/luwaxewis_fukobivafodub_pelaxa_dapatilaselu.pdfIn PDF document text
    • http://emcmotorbikerental.com/asset/kcfinder/upload/files/tuzililopojilugoluw.pdfIn PDF document text
    • https://crbz.ru/userfiles/file/zofasuwu.pdfIn PDF document text
    • http://ambulatorioveterinariocigliano.com/userfiles/files/86002978149.pdfIn PDF document text
    • https://mixajogidevo.weebly.com/uploads/1/3/0/9/130969427/fuvek.pdfIn PDF document text
    • https://sopezafenivi.weebly.com/uploads/1/3/0/9/130969371/tajuvujure.pdfIn PDF document text
    • https://koxawobe.weebly.com/uploads/1/3/4/5/134528326/33cf7ae0.pdfIn PDF document text
    • http://test.xn--b1adbeobutb0arf.xn--p1ai/kcfinder/upload/files/6325001504.pdfIn PDF document text
    • https://cosmopolitanhotel.eu/uploads/wysiwyg/files/13733072872.pdfIn PDF document text
    • https://kadonomu.weebly.com/uploads/1/3/1/4/131454950/pamagofebisixa.pdfIn PDF document text
    • https://www.cbrn.tj/nrsa_system/ckeditor/kcfinder/upload/files/lobetazudagatozanudowemej.pdfIn PDF document text
    • https://guravigipide.weebly.com/uploads/1/3/2/8/132815190/damuro_gewamitoxel_dedugedojibas.pdfIn PDF document text
    • https://kompaspt1.com/contents/files/3549177519.pdfIn PDF document text
    • https://boxavaruju.weebly.com/uploads/1/3/4/7/134759985/dofidowikizeko_vasegemiwab_pugina_jazasogi.pdfIn PDF document text
    • https://kuzimedunadaweg.weebly.com/uploads/1/3/5/9/135993385/907231b5acda30a.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_off0000c69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC69B 11072 bytes
SHA-256: 4e872cdc67109910ba39d231544c44897c16d595871802daafa9af2bedccdd4b
font_01_sfnt_off0000e068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE068 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0000f707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF707 18000 bytes
SHA-256: 4381e45001fb2f9098f16fe5bc17315759cacb4393ddd285815ee99cf71aeb6f