Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b1ef7d51fe3214…

MALICIOUS

PDF

71.2 KB Created: 2021-02-21 21:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6c04fa62f5598f551f17ae84834e6064 SHA-1: 3fab31a2fd1821457d9d90718e23694111d51ec9 SHA-256: a0b1ef7d51fe32149e1b7caa20b06a94a2a9fdb2b4c3da0587ae4d0f01e01381
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=kirkland+hearing+aids+batteries PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381287/normal_5fc660d3061e7.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/Nhfgfhj/60781283653.pdfIn PDF document text
    • https://cdn.sqhk.co/sanevujaguda/wig3jjU/alpha_industries_m-_65_defender_field_coat.pdfIn PDF document text
    • http://mimasajikataza.iblogger.org/inference_worksheets_for_high_school_students.pdfIn PDF document text
    • https://tagekoworiz.weebly.com/uploads/1/3/4/0/134016686/fafura_sezifazuli_mapowikoveniwam.pdfIn PDF document text
    • https://dolufinome.weebly.com/uploads/1/3/5/3/135330980/bupawefalibel_dunalasogatepiz_fifizaligumu_lopesefixarob.pdfIn PDF document text
    • http://insta-sale.site/mystic_messenger_jumin_endings_guideu4hqy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412606/normal_5ff06576e5b0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531523/normal_6024119b355db.pdfIn PDF document text
    • http://jududijixemuvov.22web.org/south_carolina_drivers_permit_requirements.pdfIn PDF document text
    • http://1xbet-registrat.site/940831454256wxz2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_602187c841f20.pdfIn PDF document text
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/77b348559b.pdfIn PDF document text
    • https://dosupara.weebly.com/uploads/1/3/1/3/131380612/woxuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://katezoluvezile.epizy.com/23463640506.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_off0000da80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA80 5260 bytes
SHA-256: bda31532fbe8c291920188b7d23b563a525b338f1e84919bbe2f7438d5b127c2
font_01_sfnt_off0000ec58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC58 10552 bytes
SHA-256: 12d25f67825486315b0a898355d8b6a5816f7a2cf4f0940154c0ebc0728db9d6