Malicious PDF — malware analysis report

Static analysis result for SHA-256 550db5613cb34b15…

MALICIOUS

PDF

81.7 KB Created: 2021-01-17 16:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: f1faa8dce2b063e66ba3edf70b30de57 SHA-1: b554709ed3c14f35d928c0ce2d5ac1e678b44b5e SHA-256: 550db5613cb34b158c86a6cc901dd21931a97575ad7f382c000c6a4d373491d4
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/wb?keyword=early%20bird%20catches%20the%20worm%20meaning%20with%20example In PDF document text
    • https://lopiranurepo.weebly.com/uploads/1/3/4/7/134735856/rabiremabo.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/bpifrance_financement_annual_report_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/FiigfYz/gonegosuvelin.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/3275945.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426695/normal_5fef49df6b7ae.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/personal_monthly_budget_template_uk.pdfIn PDF document text
    • https://lirigudufov.weebly.com/uploads/1/3/0/7/130776684/6778986.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/xinimafumuvuk.pdfIn PDF document text
    • https://judunuxazivu.weebly.com/uploads/1/3/1/4/131453245/rabazak_nuxumixotono_favusetakeboka.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/Cxjije4/mi_calendario_personal_uc3m.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/switzerland_visa_application_form_for_nigeria.pdfIn PDF document text
    • https://cdn.sqhk.co/busoleva/Qbhexar/megasatuwanavalu.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/ruromakavatok-visonebov-bilisafa.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/8482521.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/google_books_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_5fa02d2e8cdc4.pdfIn PDF document text
    • https://xezevatev.weebly.com/uploads/1/3/4/7/134730214/506ef3d2.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/aDhdvJp/head_boxing_d_d_dream_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/L3icjhu/clueless_cast_then_and_now_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000e9ab.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000e9ab.bin)
    • http://xibubew.epizy.com/label_template_word.pdfIn PDF document text
    • http://buxebawimiro.epizy.com/sosavurosanalaxa.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://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000e9ab.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0001237a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0001237a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AB 5848 bytes
SHA-256: 50f229742e52baee5ccac9d1b3b3e0cca2fdb658362b8b8a88bddd41d7d6e3b2
font_01_sfnt_off0000fd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD84 11236 bytes
SHA-256: e8ad7a2add304d0473d60fbdc63431be152bc937f61a677baf8c0ec10045e2ba
font_02_sfnt_off0001237a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237A 16156 bytes
SHA-256: 0fd107fc44f1dd851acfd56af15828cd9de70eed3bdecdf453acbd2d1fbbcbf6