Malicious PDF — malware analysis report

Static analysis result for SHA-256 df20a9b9c9504946…

MALICIOUS

PDF

72.0 KB Created: 2021-03-01 12:59:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5dd4185f5ff5a5518b7703972e411e3a SHA-1: 05761f152b45bf120c36416d9f01ed35450253dc SHA-256: df20a9b9c95049465e2537f6e4f70bf6d89cf93da84512fd225b85c1ab3de634
134 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 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://xezojetit.ru/award?keyword=possessive+pronouns+exercises+1+eso PDF link annotation
    • https://cdn.sqhk.co/zetobazox/egiLwgj/slither_io_hacks_mobile.pdfIn PDF document text
    • http://kerutugizuxig.mygamesonline.org/diary_of_a_wimpy_kid_film_2012.pdfIn PDF document text
    • https://cdn.sqhk.co/pulijidapis/dZ150gd/tonekesudesidakimizimor.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/ejilVhd/84512106137.pdfIn PDF document text
    • https://cdn.sqhk.co/fekebazi/JNhirjg/13451338123.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/jengfPI/vovowoxupaxife.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/76877946015.pdfIn PDF document text
    • https://cdn.sqhk.co/tuparesoxaj/emWTihc/lenovo_chromebook_c330_case.pdfIn PDF document text
    • http://lobulezinovux.medianewsonline.com/how_to_cook_ribs_in_slow_cooker_from_frozen.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/hjihtnb/54422838105.pdfIn PDF document text
    • http://brightshopbg.xyz/ischgl_snow_report_forecast58x4s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530070/normal_601415e517af3.pdfIn PDF document text
    • http://zemesod.getenjoyment.net/nikon_l330_release_date.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489058/normal_600b63d7d59e6.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwifemi/jfhe5nJ/xaxumopet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sajojabop.epizy.com/43566959163.pdfIn PDF document text
    • http://wivonubezur.epizy.com/crossword_solver_and_answers_dictionary._com.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF61 4668 bytes
SHA-256: c98b747a7d68874130f786b494c9177fee173c262b483882cb99c8e298bb8aa6
font_01_sfnt_off0000df55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF55 10336 bytes
SHA-256: dd682833242db07bcae798e01debead2a62dd428bf80ef4fad953649963144de
font_02_sfnt_off000102ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361