Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bdf63ca5f3c4f0…

MALICIOUS

PDF

106.2 KB Created: 2022-04-30 16:13:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 3bfeaee7cc6da2585f7961d4c6abcc19 SHA-1: cb2b12c41bc6aaddb9c0798ffd181eba8b6b43c3 SHA-256: a8bdf63ca5f3c4f001ca45a239c429c61c12f6767a116f456aeb168c2b0bce82
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://fecuq.co.za/YmrXLWy8?keyword=quality%20management%20system%20pdf%20in%20hindi PDF link annotation
    • http://marcelponjee.nl/ponjeefiles/file/51945586700.pdfIn PDF document text
    • https://vexokisu.weebly.com/uploads/1/3/4/7/134717498/xedudogorisanep.pdfIn PDF document text
    • https://internationallanguagenavigators.com/media/37072887008.pdfIn PDF document text
    • https://konferencia2014.medius.sk/userfiles/file/90169490402.pdfIn PDF document text
    • http://nawoo.net/userData/board/file/pubupaw.pdfIn PDF document text
    • https://jiwalevimube.weebly.com/uploads/1/3/4/8/134870165/jamapo.pdfIn PDF document text
    • https://www.edaas.com.tr/admin/kcfinder/upload/files/kizemavisuw.pdfIn PDF document text
    • http://jin16888.com/userfiles/file/90771005008.pdfIn PDF document text
    • https://www.elshandmadedesign.nl/ckfinder/userfiles/files/fuzogoxobosil.pdfIn PDF document text
    • https://kopejupamuv.weebly.com/uploads/1/4/1/3/141318798/117e559fd66.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/1q8rrhlfdif4apijf5r8269819/gonoji.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/53469351397.pdfIn PDF document text
    • https://vetricrackers.com/ckfinder/userfiles/files/50908018891.pdfIn PDF document text
    • http://lienminhkinhte.net/data/media/files/96654737357.pdfIn PDF document text
    • https://www.netcorp.hu/data/editorfile/xojalopa.pdfIn PDF document text
    • https://tivirubopif.weebly.com/uploads/1/3/1/4/131406506/1132335.pdfIn PDF document text
    • https://solyaris.pro/admin/ckfinder/userfiles/files/14244363906.pdfIn PDF document text
    • https://jevogivufete.weebly.com/uploads/1/3/0/7/130738845/mimopetizirud.pdfIn PDF document text
    • http://trufeel.com/ckeditor/ckfinder/uploadfile/files/pomukurifugekepotir.pdfIn PDF document text
    • http://tourtraveltalk.com/app/webroot/js/kcfinder/upload/files/10401652817.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/67628359189.pdfIn PDF document text
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/fimugojabirub.pdfIn PDF document text
    • https://tisemadu.weebly.com/uploads/1/3/4/3/134387657/df3ec2fd.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 extracted file (font_00_sfnt_off0001394d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001394d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001394d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1394D 17404 bytes
SHA-256: f49078772b86b85b71eef5217d45c359d0b14cd532b38294bffb812ec6b4a2a3
font_01_sfnt_off00016725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16725 11000 bytes
SHA-256: 6ed4dd23a9cfa6be27dbda3c88730906cf94b5d1effcadb8ce4d208aabf4fcf1
font_02_sfnt_off0001806c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1806C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1