Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6b0a97107abe72…

MALICIOUS

PDF

77.3 KB Created: 2021-03-02 05:23:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9e91efc13e25443ef54318f0f7295039 SHA-1: c3ecc77cf65fcdac6c1d79b2f91836618546a165 SHA-256: bd6b0a97107abe7287e81eaa201e8e669e982710085c3fc575f8ea65b51349e2
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://soxebez.ru/wb?keyword=briggs%20and%20stratton%20675%20series%20pressure%20washer%20oil%20change PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4492245/normal_60049542b0ea7.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/sad_song_we_the_kings_piano_letter_notes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5fe8ff38f31f3.pdfIn PDF document text
    • https://cdn.sqhk.co/nupumusu/nWgdwuB/guide_for_free_fire_diamonds_2020.pdfIn PDF document text
    • https://vapatukubarokul.weebly.com/uploads/1/3/0/7/130739856/mugedib.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxegaxujifo/RBmJWih/best_pencil_sketch_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446784/normal_601272908c528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381551/normal_60367e72794ec.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/1150579.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxolusufa/UjbjgKq/73928410722.pdfIn PDF document text
    • https://cdn.sqhk.co/xerolunem/iiJKfih/download_race_master_manager_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366340/normal_5fc6954ad13ea.pdfIn PDF document text
    • https://lubefapezixa.weebly.com/uploads/1/3/1/3/131398117/bevag-fejasujugevol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_6033ecb576c9f.pdfIn PDF document text
    • https://ralawuxageg.weebly.com/uploads/1/3/4/3/134319431/9734375.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_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 5832 bytes
SHA-256: e91e9734f60d2f4429d8061100ffc9ffb5f3fbca849497e999f17b3c069d1b95
font_01_sfnt_off000101fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FC 11292 bytes
SHA-256: cf5dbc871d791919a88cca421d6c083b031a26a09ae653ff3cdb70b72388d3c6