Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a813aea5920ff3…

MALICIOUS

PDF

76.6 KB Created: 2022-04-01 13:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: dbc690d8d067241fc3005c14902a9bb0 SHA-1: ff2351fad8b6601b235a1e0d10fb3347b506ad4f SHA-256: 18a813aea5920ff3d130ed4dc1798f2a2006247098cfaf52614d962bd08c30fd
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://colod.co.za/YmrXLWy8?keyword=john%20deere%2014pz%20lawn%20mower%20owner PDF link annotation
    • https://lefatelaxebaj.weebly.com/uploads/1/3/5/3/135398996/1708155.pdfIn PDF document text
    • https://wexokoxenasebun.weebly.com/uploads/1/3/1/4/131406289/9141417.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1620f0e32e2c1f---58982962894.pdfIn PDF document text
    • http://aleksandriya.topmebli.com/content/xuploadimages/file/41261436672.pdfIn PDF document text
    • https://vemuwusikive.weebly.com/uploads/1/3/4/7/134733059/lilil.pdfIn PDF document text
    • http://ecompletecontact.com/ckfinder/userfiles/files/bobazalazite.pdfIn PDF document text
    • https://simavaxefawok.weebly.com/uploads/1/3/4/6/134666246/881b582.pdfIn PDF document text
    • http://hbinpol.cz/media/images/upload/file/datod.pdfIn PDF document text
    • http://iba.chemolak.sk/userfiles/file/deseruvunufajagonupuro.pdfIn PDF document text
    • http://gorre-paysage.fr/ckeditor/kcfinder/upload/files/77464877829.pdfIn PDF document text
    • http://ecogestval.es/userfiles/file/606537007.pdfIn PDF document text
    • https://ratilobavet.weebly.com/uploads/1/3/1/8/131858747/4fede52c.pdfIn PDF document text
    • https://dimazupaw.weebly.com/uploads/1/3/2/8/132814154/dokamumilebokasaz.pdfIn PDF document text
    • https://nawawedivoxoni.weebly.com/uploads/1/3/4/7/134719505/0f1eb5.pdfIn PDF document text
    • https://tulizeboposun.weebly.com/uploads/1/3/2/3/132303370/2084026.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/161fd65ebe962e---vepanejonalogug.pdfIn PDF document text
    • https://xozojijeb.weebly.com/uploads/1/3/4/4/134436315/bajimiwoxofem.pdfIn PDF document text
    • http://machin.kr/userData/board/file/93415176194.pdfIn PDF document text
    • https://yourwebcenter.com/files/file/4883807943.pdfIn PDF document text
    • https://japilulijerimu.weebly.com/uploads/1/3/0/7/130738614/parexirume_jefimixevopadi_ruzezi_xoguzudevumiwus.pdfIn PDF document text
    • https://hoangnhataudio.vn/media/files/74281439707.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_off0000c05c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c05c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD873 10868 bytes
SHA-256: 998760b040cb42b7349b8796674f172f47b3103069a8a8e954d2126d677e335b
font_02_sfnt_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 19608 bytes
SHA-256: 5a4748a8933a454e6794dfb625d69d740ebe94aa58eb1969a1ec67660e5f8ab4