Malicious PDF — malware analysis report

Static analysis result for SHA-256 e26fb4ed247edd97…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 09:55:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 37599d6ae0bdc0d6e3d19273148e9941 SHA-1: ad6fc3e86dbdaff9f42195dda9f4f6f593eae149 SHA-256: e26fb4ed247edd975b8ab5524bd9d8f81a7f8a67dbef3d5a1785fe8c81192874
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://druttle.ru/award?keyword=what+are+the+names+of+the+4+houses+in+harry+potter PDF link annotation
    • https://cdn.sqhk.co/velizovatim/ejhibKe/gejisajozixole.pdfIn PDF document text
    • http://kelnoteres.xyz/6544912489vy1m7.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/hBWlZsy/mizat.pdfIn PDF document text
    • https://lelodudovoveju.weebly.com/uploads/1/3/1/6/131607117/pufoduxoro-nuxezezideka-dubuxukame-xezulazu.pdfIn PDF document text
    • http://table-wait.com/hush_hush_sweet_charlotte_1964_full_moviefdq8v.pdfIn PDF document text
    • https://cdn.sqhk.co/kajemuwasutu/ddpxghc/guns_n_glory_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419225/normal_5fee0d842f47b.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/Nmgjjfw/centipede_game_online_unblocked.pdfIn PDF document text
    • https://nojamatisi.weebly.com/uploads/1/3/1/3/131384142/4702144.pdfIn PDF document text
    • http://superheatbelt.xyz/11940037038vls77.pdfIn PDF document text
    • http://myshoes.moscow/mozoluferikoriwepua71ew.pdfIn PDF document text
    • https://mizunemaki.weebly.com/uploads/1/3/4/8/134850414/62baa69be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zinezalidoratov.rf.gd/40933262066.pdfIn PDF document text
    • http://puwolir.epizy.com/15790044533.pdfIn PDF document text
    • http://fixelelediv.epizy.com/capitulo_1b_core_practice_1b-_9_answers.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_off0000e100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE100 5312 bytes
SHA-256: 85d087f6d132e43ceae75925d241266d595b4da6ee3a8a61d0e8f03d5823c970
font_01_sfnt_off0000f301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF301 10184 bytes
SHA-256: 9ce424ab194c357390690da2a4bc5de0c4679dde8f05823f49a1540d414c201c