Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8101e79d48a717…

MALICIOUS

PDF

136.0 KB Created: 2021-08-20 09:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: c917e017fefc44a46a406aedfb50b08e SHA-1: 0c3f2d77d9dab6f190473304697b3eefb4b3707e SHA-256: aa8101e79d48a717b057c438e457023ca115da900cced33697065a9d5862e549
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9531

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
  • 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://cructi.ru/uplcv?utm_term=are+minty+codes+still+available PDF link annotation
    • http://bdnchem.com/upload/files/wamasiduvapunaxukonezovov.pdfIn PDF document text
    • https://www.crqp.ch/ck/ckfinder/userfiles/files/lowigujawo.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16094504443bd2---2743207967.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb02b7ed509---745327782.pdfIn PDF document text
    • http://icltindia.in/userfiles/file/66648972008.pdfIn PDF document text
    • https://oversaslogistica.it/file/96215706933.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e1b59991b5---99969430905.pdfIn PDF document text
    • http://oilmachineydy.com/d/files/xuwajitaj.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f40b5aceaa3---566459608.pdfIn PDF document text
    • https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/4f85a887eb2a0c3be186156835e80958/netax.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13d436b724---xarite.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d0a8a77fe9f---tosedisenivopiboponuxiwa.pdfIn PDF document text
    • http://novussiteyonetimi.com/uploads/file/35372383155.pdfIn PDF document text
    • https://chogmai.org/ckfinder/userfiles/files/69071387549.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/gafetowitaxi.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/bec2210a2bbb08945e2edb9a55e8012e/mekezudujevufuduwurim.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/161179fc4f18fd---16285237710.pdfIn PDF document text
    • http://maihome.hu/admin1/file/21947572396.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751f8b762d2---28804879227.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16090c5f06e916---18784966488.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/9c8f095312d1c968f38b5c976477ced7/57674484529.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/k3kh91j36s0q32gjbi9srq7ujr/451602888.pdfIn PDF document text
    • https://questyme.ca/userfiles/file/xewaxapimekin.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_off0001b213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B213 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001ca25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA25 17336 bytes
SHA-256: 9c105a42ca880c894e44bb33d781154212672e160d3df827841d303d471561ea
font_02_sfnt_off0001f7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F7A6 10832 bytes
SHA-256: 06e57fec921675c377325d37b8f37a3ee3fad4c1fa56b67da1c9c827a6678dc4