Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce8075cb2b9080e…

MALICIOUS

PDF

71.4 KB Created: 2021-03-02 21:36:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 50c4af3400133692158d01ce43755390 SHA-1: 0ef0b1d7dc9f3ca8a8aaed8131c59fe501e507ac SHA-256: 9ce8075cb2b9080e09730d77dc8f6f2cbd6d7d20ef0987b719e5b1fa1f75e051
186 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 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://nipisod.ru/award?keyword=easy+piano+sheet+music+with+letters+all+of+me PDF link annotation
    • https://cdn.sqhk.co/jepivitixiwo/gcgirEf/79976133707.pdfIn PDF document text
    • https://cdn.sqhk.co/mumoragato/jbgc6df/76502400843.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/4arZSVR/tornado_warning_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/nimuxugemu/ygga2zL/elegant_dining_room_sets_for_small_spaces.pdfIn PDF document text
    • http://copalofa.site/774316876763jkpr.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/af28e516c490de2.pdfIn PDF document text
    • https://karegito.weebly.com/uploads/1/3/4/6/134626514/9059800.pdfIn PDF document text
    • http://creditscorerepair.info/simufuwbs26.pdfIn PDF document text
    • https://wajevubal.weebly.com/uploads/1/3/4/6/134687537/numizixakogebir.pdfIn PDF document text
    • https://sexuviruzimi.weebly.com/uploads/1/3/2/8/132814305/c495148877bbb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/34535148421.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/sadumaxirelixirutuzip.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/fijis.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/cowboys_and_aliens_full_movie_720p.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_off0000db03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB03 5404 bytes
SHA-256: 6e7ba98a0efb4fc5a32b198c18b9dda82bf361d47add8bc559eb2cbefaed353c
font_01_sfnt_off0000ed57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED57 10412 bytes
SHA-256: 94c31eeeb47af9b108dcd51c1a89e5d39ad9b1065353eae2e5381375f0c1a34a