Malicious PDF — malware analysis report

Static analysis result for SHA-256 032b3359fa142f6c…

MALICIOUS

PDF

79.1 KB Created: 2021-02-26 19:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f6541fca76484d7cf5814c063ddd7a6f SHA-1: 418f553029ef7171798cb7ce8488e66eab82c94f SHA-256: 032b3359fa142f6c958c6fba08812cc6e5e5c549a41c2ee6bf93252e944b31c5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://maypoin.ru/award?keyword=machine+learning+algorithms+python+libraries PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4468814/normal_5ff24a44ae5be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501367/normal_601f90d1c3905.pdfIn PDF document text
    • https://kamedewogivazu.weebly.com/uploads/1/3/4/0/134096977/nudufaduvodiga.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/cxAhfha/easy_small_business_accounting_software_free_download.pdfIn PDF document text
    • http://tupaxeguna.scienceontheweb.net/pleasure_without_conscience_meaning_in_telugu.pdfIn PDF document text
    • http://unosital.space/45355480583jo4wd.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/iCPNuhi/wsdot_mountain_passes_blewett.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445326/normal_5fc85b3c3dec6.pdfIn PDF document text
    • https://cdn.sqhk.co/xanovika/AaWBjbf/39478933954.pdfIn PDF document text
    • https://cdn.sqhk.co/baxalelizop/yjgBcji/3499388997.pdfIn PDF document text
    • http://tirevuvezig.22web.org/how_to_become_a_navy_medical_officer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jezevenakos.myartsonline.com/gutejela.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/simcity_4_deluxe_edition_mac_cheats.pdfIn PDF document text
    • http://tijejawoporufil.epizy.com/management_information_system_study_guide.pdfIn PDF document text
    • http://kezadovimitaw.rf.gd/full_bhagwat_geeta_in_marathi.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_off0000f0e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E5 5592 bytes
SHA-256: 75cb43048f5a29c9360b97fd744fc1c0b35c5e512a08559ade38381d049bd766
font_01_sfnt_off000103d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D0 13860 bytes
SHA-256: f5f0f655d38825f7dc730d19a82aa996147c58f66d52151991c9372882451ced