Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb4bbf9f4676f08…

MALICIOUS

PDF

72.9 KB Created: 2021-03-03 20:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d78fb5d884eb181d8731bb3c79e2875a SHA-1: c4d93f3a2fad275a005cf38363838ddd8e918b3f SHA-256: 8fb4bbf9f4676f08ee6bb9c5c27725399fbcac151e1a658551cdd61aa9cb2bca
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://kuzutuzo.ru/award?keyword=que+quiere+decir+como+agua+para+chocolate PDF link annotation
    • https://wanovupejofo.weebly.com/uploads/1/3/4/5/134580977/0bacd6.pdfIn PDF document text
    • https://zifofuxe.weebly.com/uploads/1/3/5/3/135386801/woseb_dosanewupaw_xevinele.pdfIn PDF document text
    • http://biolinkus.me/speaking_in_tongues_booksz35kt.pdfIn PDF document text
    • https://fasuwilobavofe.weebly.com/uploads/1/3/4/4/134489762/6865248.pdfIn PDF document text
    • http://cabinetsly.xyz/scrum_approach_definition6cqzr.pdfIn PDF document text
    • https://pefizisiguxuv.weebly.com/uploads/1/3/1/4/131438819/28f61e.pdfIn PDF document text
    • http://mikazuxo.mypressonline.com/cat_eye_velo_5_not_working.pdfIn PDF document text
    • http://creamwalls.space/84788931850yqbmj.pdfIn PDF document text
    • http://xovekofetovo.66ghz.com/agent_immobilier_formation_suisse.pdfIn PDF document text
    • http://goldstein.capital/the_effortless_experience_downloadz7yvr.pdfIn PDF document text
    • http://world-wildshop.com/13773194996phezn.pdfIn PDF document text
    • http://ig-objectionform.com/lofaviganotojugiw7220a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jilovin.epizy.com/chess_online_form.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/zogenadedilu.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/78715909329.pdfIn PDF document text
    • http://sazerubewufuzuk.epizy.com/harry_potter_yule_ball_invitation_template.pdfIn PDF document text
    • http://tozemuj.rf.gd/42605156409.pdfIn PDF document text
    • http://fumibomi.epizy.com/wujifegepaxijenilajo.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 PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE45 5496 bytes
SHA-256: 615c983833f39e5cd76b1682ace9dcd1d58a3a00d1ae0ea361b5373a9801dedf
font_01_sfnt_off0000f0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BF 11092 bytes
SHA-256: 63cce92c1fda157d5e1befee64ddc1b3b1270658ad209a43055330e3899c1c63