Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8417c055d54f934…

MALICIOUS

PDF

67.4 KB Created: 2021-02-26 16:04:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e3d0dd5a2c7ad70e2e7024ac1d363ada SHA-1: 499c5eccb770ab0881b92a1ac0dc9b64f3d73f67 SHA-256: d8417c055d54f934653ec6bfd079fd63c40be1f28e3b7065acb79110c9a4ce81
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://mezovuduw.ru/award?keyword=data+science+what+do+i+need+to+know PDF link annotation
    • http://afracheat6.xyz/boule_de_suif_englishcg9v1.pdfIn PDF document text
    • https://favasonod.weebly.com/uploads/1/3/2/7/132740296/8970239a6da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500677/normal_5fe5050a7a790.pdfIn PDF document text
    • https://vavinaxedekofew.weebly.com/uploads/1/3/0/9/130969509/1513748.pdfIn PDF document text
    • http://birjand.design/buddhistische_lehrenpqzw.pdfIn PDF document text
    • http://discout.online/somewhere_the_vault_papers_mod_apku0ym8.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/PjiwCxR/cash_app_refund_request_denied.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_6019331e33897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371495/normal_6012fdb15770a.pdfIn PDF document text
    • https://dufibivi.weebly.com/uploads/1/3/5/3/135346242/kidizubowun.pdfIn PDF document text
    • http://gvidilon.ru/vusixcodg4.pdfIn PDF document text
    • https://cdn.sqhk.co/bosareke/oje2h2S/nezidupinemufuxenanepa.pdfIn PDF document text
    • http://copyrightshelpcenter.com/74481093571uroci.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC05 5052 bytes
SHA-256: 196540800b0f2197323350be94108856d68ce5870a647c2eaaf347e7084b643c
font_01_sfnt_off0000dd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4E 10456 bytes
SHA-256: a079fbc9bd9a67f78c96ce06590e401f3a3c5b7a1be92aa4679408815b8f6ef4