Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c547049533bd84f…

MALICIOUS

PDF

84.4 KB Created: 2021-07-30 13:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4f2d38ea5e4a5a5509feea481720046a SHA-1: 26ab76e2d12bd2a6670bc4c7f1c0e4dcccf700af SHA-256: 8c547049533bd84fa999f5a46c01d4c1e3bb6e879490c8b6e421e312eb707213
196 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including a payment redirection lure and a ClamAV detection for a phishing trojan. The document contains numerous links to external websites, many of which appear to be part of a link farm hosted on compromised or disposable domains. These links likely lead to phishing pages designed to steal user credentials or financial information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crysiq.ru/uplcv?utm_term=how+to+activate+my+pf+uan+number PDF link annotation
    • http://nusratali.com/userfiles/files/rijogejomazikazojawixuwe.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/38205026693.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///202171617535255.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/b2f627d96c7d0864a3328e4d1bb35068/dekowiravug.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/d97b6034e92afd4901b97fe7163cb64b/gufoxililijivasisaju.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/2cf55486ce08a082a6553845afbeb7da/poketijeru.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/nuvefa.pdfIn PDF document text
    • https://yepsell.com/userfiles/files/27863012696.pdfIn PDF document text
    • http://sequoia59.com/clients/867919/File/46767005833.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c944a3a69b---95469309572.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/00b353c86d458681f3d456f706473b90/farowabutukamaxo.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/jidajopiwitutokibewisaz.pdfIn PDF document text
    • https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/42535652234.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/c6b24f8306da3dcab391adf5dd16cb60/13889219649.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/597c2f5271d1cf28148e02ab27d6f572/wanepipebikajuk.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/ab2c0b0ee8af33a2fbb175d227da868c/1722073794.pdfIn PDF document text
    • http://nebo52.ru/uploads/files/65590865822.pdfIn PDF document text
    • https://burgas-remonti.com/userfiles/file/39054290335.pdfIn PDF document text
    • http://movitecnic.com/ressource/site-image/files/58473584692.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2e4ee16d3---86288176977.pdfIn PDF document text
    • http://centroolosprato.it/userfiles/files/56709650318.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160829516d2b59---warenumad.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e71a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF31 10924 bytes
SHA-256: 8084ce3a4bd6bde503d5457619d55aede03b4801687f677e6143b863fbabf1cd
font_02_sfnt_off00011851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11851 16872 bytes
SHA-256: f3b2ce9895b25ff2480bf9db9e1cdedbbeea8bb5022309f2eb737968b14f4a29

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