Malicious PDF — malware analysis report

Static analysis result for SHA-256 4450c8d8080afe4c…

MALICIOUS

PDF

88.8 KB Created: 2021-08-13 22:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-10
MD5: 4245b911847befdb881ae181085f0b11 SHA-1: 46e95c39aa81ff4ab63f06440482cab0b0e8a13b SHA-256: 4450c8d8080afe4c6f61ddd7a6761158b755bbec23b659311ea6e000276d0209
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://creative-format.com/upload/editor/files/jeribefosodewawa.pdf In PDF document text
    • http://virtuozi.ru/sites/all/sites/virtuozi.ru/files/12832963929.pdfIn PDF document text
    • https://masihpt1.com/contents//files/kalivulaturibotigata.pdfIn PDF document text
    • http://vralumni.com/clients/7/71/71e0d721b250bdad3664bf54e70089ab/File/69765431673.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/89356618648.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a44dddb89aa---35523217744.pdfIn PDF document text
    • https://webtechnocrats.com/upload/file/bagizonotevajasijazugaf.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3b80b7479---norelekada.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1609f340457a14---16743548071.pdfIn PDF document text
    • http://maslatalaia.com/userfiles/file/visudawefabeledopowuv.pdfIn PDF document text
    • https://binhvi.com/upload/files/94889305553.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/jnlkkkbub9pqr6r2fqv6knq9r5/lowozulirabobitupidoz.pdfIn PDF document text
    • http://yangs-ns.com/ckfinder/userfiles/files/20210721155908.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/9253c715fb80bac1d5498caf9684b1c7/sokukobenugugomunovim.pdfIn PDF document text
    • http://mkycc4.com/kycc4.com/userfiles/files/dajeximegofuvetiro.pdfIn PDF document text
    • https://michelbarbot.com/upload/files/99264183882.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/13754626253.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e87e329344bf2359441f1ef3b551c060/biwesabobojupemu.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/pbc3i35mr2hodg36u3tg8eh845/binupalonujefikakup.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/lalogedujogubakifuposarog.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/88088175339.pdfIn PDF document text
    • http://sicilyontable.it/userfiles/files/52899568051.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc7c9160b8---52651490858.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=ejemplo+de+proyecto+de+investigacion+cientifica+pdfPDF link annotation
    • 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_off0000f619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF619 11256 bytes
SHA-256: 9827ce1abfd98c5c0bc56ab4505c3aa5e22e19ae97385f9cdbe6ee40c0a16d57
font_01_sfnt_off00011043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11043 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12855 16656 bytes
SHA-256: 2175d822d4a2cebc8a9b30fbcdabecf2e890418d4598eb6087cca690c83ec392