Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f4d8f2c678602ce…

MALICIOUS

PDF

97.8 KB Created: 2021-03-24 01:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 000086d45cd32576267cd0c5e8a18472 SHA-1: 5a7bc357b8fa911fdced7ea30a948c5c671a18aa SHA-256: 2f4d8f2c678602cee0b64d2edff168a7d7519c7bc38dd2b034729cbe50d30fa3
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The heuristics indicate a 'Payment redirection lure' and 'Urgency lure', suggesting a phishing attempt to trick users into changing payment details or taking immediate action. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://vilenefex.ru/wix?keyword=new+york+state+little+league+tournament PDF link annotation
    • https://kewivuzakokefi.weebly.com/uploads/1/3/0/7/130775129/fodasowopovuv_nifodoja_fexatator.pdfIn PDF document text
    • http://idealica-tufficiale.website/10410249757ecubr.pdfIn PDF document text
    • http://vk-settings-change.online/87213827682fjv3y.pdfIn PDF document text
    • https://lojexidipiwakif.weebly.com/uploads/1/3/4/0/134041559/fuvefonuwudo-dafubidanivuwep-jadirote-xenilid.pdfIn PDF document text
    • http://rabemedexisubis.mygamesonline.org/lutetixi.pdfIn PDF document text
    • http://fastpeysistem.online/acantosis_nigricans_en_pediatriammi9d.pdfIn PDF document text
    • http://gavokofubafixi.getenjoyment.net/23844584940.pdfIn PDF document text
    • http://neriwor.medianewsonline.com/rains_of_castamere_cello_sheet_music.pdfIn PDF document text
    • http://wuroguredogir.getenjoyment.net/all_my_loving_guitar_tab.pdfIn PDF document text
    • http://suwufexez.sportsontheweb.net/15344961166.pdfIn PDF document text
    • https://zolefixu.weebly.com/uploads/1/3/4/4/134432518/winigefaxenasum.pdfIn PDF document text
    • http://vozuzutiwajuzip.getenjoyment.net/dudedaluluboseviwu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fabodatutowew.epizy.com/consolation_no_3_sheet_music.pdfIn PDF document text
    • http://wowimes.epizy.com/bluestacks_windows_7_ultimate.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/viwuk.pdfIn PDF document text
    • http://zofawuzimiva.rf.gd/31928950812.pdfIn PDF document text
    • http://zobujenogubate.rf.gd/24912266022.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/android_recyclerview_divider_last_item.pdfIn PDF document text
    • http://kogosiji.epizy.com/xoxudatalovedix.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/fufifokatonapabif.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_off00014102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14102 5232 bytes
SHA-256: 4e8f7ba284a76c43c0a15c51c868827026771956a4a05bce2e419e61dd54fe1e
font_01_sfnt_off000152db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152DB 11460 bytes
SHA-256: cef611a2cb21bf5b11a1c54ea974c35eab07e1baea66c2effeca18762428e0db

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