Malicious PDF — malware analysis report

Static analysis result for SHA-256 94153bcadba2de16…

MALICIOUS

PDF

70.0 KB Created: 2022-03-30 20:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 8acd5882aaa514c5d56b8639b396dbbc SHA-1: cb1c92bd648f34c0ca580aee397af03fb2342dd7 SHA-256: 94153bcadba2de16e21ebfa7ff7c95cc62bce41a8e974ed71abb778f235c65e4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a large number of external links, indicating a malicious intent. The ML classifier and ClamAV detection strongly suggest this is a phishing or trojan delivery mechanism. The embedded JavaScript likely facilitates the redirection or download of a secondary payload, while the numerous external links, many hosted on disposable domains, are characteristic of SEO link farms used to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://fecuq.co.za/YmrXLWy8?keyword=what%20lexile%20level%20should%20a%207th%20grader%20be%20at PDF link annotation
    • https://surevasod.weebly.com/uploads/1/3/1/8/131856145/7358352.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16234ff9ee52dc---wonutagawararujokajik.pdfIn PDF document text
    • https://sixoribena.weebly.com/uploads/1/3/4/8/134848884/b742b5e162c0.pdfIn PDF document text
    • http://hotel-farida.ru/files/files/54855745315.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/8669922.pdfIn PDF document text
    • https://mivubifazexaj.weebly.com/uploads/1/3/4/3/134381565/vamopegawa-jakuvo-wafofajuzape.pdfIn PDF document text
    • https://berekimitavogi.weebly.com/uploads/1/3/1/4/131452750/1659d9edb28.pdfIn PDF document text
    • http://com123.vn/uploads/file/40512005951.pdfIn PDF document text
    • https://repamepofasepa.weebly.com/uploads/1/3/1/4/131437198/1464937.pdfIn PDF document text
    • http://www.abcklima.hu/data/editorfile/kolikudenuparulosajilux.pdfIn PDF document text
    • http://thevisionkharj.com/userfiles/files/72955375093.pdfIn PDF document text
    • http://ebrinteractive.com/userfiles/file/37553357579.pdfIn PDF document text
    • https://wezawitulenif.weebly.com/uploads/1/3/4/3/134338426/nuxajejako-zozipa-reginawenakew-lereguwisa.pdfIn PDF document text
    • https://nudonadutosaj.weebly.com/uploads/1/3/4/5/134595964/a74fce1f194b.pdfIn PDF document text
    • http://vxclouds.com/userfiles/file/21706485488.pdfIn PDF document text
    • http://www.mousumibanerjee.com/fckimages/file/75508999169.pdfIn PDF document text
    • https://tizizuner.weebly.com/uploads/1/3/1/8/131872037/roxefora.pdfIn PDF document text
    • https://kanoritixuvu.weebly.com/uploads/1/3/4/8/134874131/junef-rilavosifozopum.pdfIn PDF document text
    • http://groupeao.com/app/webroot/js/kcfinder/upload/files/gobonedusagatexemon.pdfIn PDF document text
    • https://jagedebake.weebly.com/uploads/1/3/0/7/130738918/659b9e.pdfIn PDF document text
    • https://teregurejojexol.weebly.com/uploads/1/3/4/8/134879353/rufir.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_off0000b050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB050 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000c6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6EF 16204 bytes
SHA-256: acdb7604c0422b543e95ca54b0c3156d326e54f15afadb5fa4fed64b9d7ecac7
font_02_sfnt_off0000f0ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CA 10872 bytes
SHA-256: 47b502e446119bdf6357eb24a3f3461223233518c7d58f6831527cc0a841b87e