Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a313108e40bd1f8…

MALICIOUS

PDF

68.5 KB Created: 2021-02-11 19:25:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f75179bdbffe23d1502ddd9932032302 SHA-1: 97d8c3464b47268c91c0120eb3e40e7bb2c9ccc0 SHA-256: 7a313108e40bd1f8cc817e0dee9fb38d598274245583054bfedc531902b11d41
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://seumenha.ru/wix?keyword=true20+adept%2527s+handbook+pdf PDF link annotation
    • https://lopodegif.weebly.com/uploads/1/3/2/6/132695694/wopudot.pdfIn PDF document text
    • http://thiswaytovogue.com/votigotowakerosotumusexatlfwgb.pdfIn PDF document text
    • http://proita.space/1952081195899ytj.pdfIn PDF document text
    • https://cdn.sqhk.co/gusisitixinu/haggFKw/wevikixobopikakufufat.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/metformin_dosage_pcosdq0l0.pdfIn PDF document text
    • https://mujekakuvegaxum.weebly.com/uploads/1/3/2/3/132303245/nidaditekogedizevi.pdfIn PDF document text
    • http://okstore.info/errorless_biology_book_downloadu3uur.pdfIn PDF document text
    • https://jetujipizi.weebly.com/uploads/1/3/0/8/130813705/3899408.pdfIn PDF document text
    • http://heleogose.online/12611747085mwmbi.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/HjcNRyb/fruits_magic_sweet_garden_match_3_puzzles.pdfIn PDF document text
    • https://lififotepul.weebly.com/uploads/1/3/4/3/134339298/7817537.pdfIn PDF document text
    • http://alcozerox.com/the_code_book_simon_singhi6nuq.pdfIn PDF document text
    • https://moxigowa.weebly.com/uploads/1/3/0/8/130814106/webepebopaxadep.pdfIn PDF document text
    • https://zoluwapipapak.weebly.com/uploads/1/3/5/3/135321816/3433632.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/bgiij5l/kuxuzupomuzadal.pdfIn PDF document text
    • http://reabook.online/membeli_token_listrik_di_shopeebb6os.pdfIn PDF document text
    • http://obmenkalnr.online/uptu_mba_entrance_exam_previous_year_question_papersclg3c.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_off0000d009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD009 5560 bytes
SHA-256: c0fa62e32b2e61c5dbbef2d360768150d4d72b45751826ced6070c4a716d9e02
font_01_sfnt_off0000e2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E4 9860 bytes
SHA-256: ae84e6fd9d6b5be267e0502b07b9e9b1c49877b3d15ae30169cdb486451904dd