Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5c606de98fed07…

MALICIOUS

PDF

72.0 KB Created: 2021-02-07 13:43:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d6824c99ec605fdb4d7f63f38ee0cef7 SHA-1: b5cd8497321eae903b5d36a8e164b9c08b5422fd SHA-256: 9a5c606de98fed0770d97b916d232bad933a6c14c1985f71c5b8d3de6b8c557d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/123?utm_term=pdf+catching+fire PDF link annotation
    • http://rollernefritmassage.xyz/93067672622xetc2.pdfIn PDF document text
    • http://idealica-italiauficiale.website/bal_brahmachari_video_songsk120t.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/fhfYegd/mgm_grand_detroit_poker_room_phone_number.pdfIn PDF document text
    • http://rumagadoli.22web.org/27243052704.pdfIn PDF document text
    • http://ionatr.space/18133738135yh3dn.pdfIn PDF document text
    • http://thesimplycompleteseries.com/oc_caste_list_in_apszxrt.pdfIn PDF document text
    • https://nubukagogurug.weebly.com/uploads/1/3/4/4/134495847/5181335.pdfIn PDF document text
    • https://givunanisu.weebly.com/uploads/1/3/4/8/134848628/subuwufubaxi.pdfIn PDF document text
    • https://durosokikiw.weebly.com/uploads/1/3/1/3/131379956/tegomuronu_nazunu_metupege.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://delezomixotu.epizy.com/32616239309.pdfIn PDF document text
    • http://nukamepewavux.epizy.com/napakivokasonenitipawat.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/22570688150.pdfIn PDF document text
    • http://pababevo.epizy.com/xonulajamifaxowun.pdfIn PDF document text
    • http://mudopijafaj.epizy.com/41044461538.pdfIn PDF document text
    • http://lodaxiku.rf.gd/55121987583.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_off0000dc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8C 5072 bytes
SHA-256: 1bd738ace0ab3709b1340f8434eb37963f26bc9f8b2f7a67b406f2d8c9a8f944
font_01_sfnt_off0000edcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCB 11216 bytes
SHA-256: 996002e1f0db7873411d864234e28535a5ecbeb801561462438ec580b38711ae