Malicious PDF — malware analysis report

Static analysis result for SHA-256 225eca6ae42f44de…

MALICIOUS

PDF

102.9 KB Created: 2021-08-09 00:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0ae9e0a4eb3bf5856ab914120337b2bf SHA-1: 59e9228e089cd170f1a422c2df76f6264695c9f2 SHA-256: 225eca6ae42f44de5af6794228add801603e0cc28be34a2d83c0c118d666c490
176 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm designed to obscure the true destination. One notable URL, http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1607533c304460---43751864427.pdf, points directly to an IP address, further indicating a suspicious hosting setup. The document's structure and the nature of the embedded links suggest it is intended to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://cevhertemizlik.com/userfiles/files/40971910440.pdf In PDF document text
    • https://peilimineko.com/userfiles/file/vugavafi.pdfIn PDF document text
    • http://studiomilano.eu/userfiles/files/79845293030.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/26cae22b3b68f80bab92043c9ddc38b8/dusebinuvopewetekokezin.pdfIn PDF document text
    • http://fizjoactiv.eu/Upload/file/67360938616.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1607533c304460---43751864427.pdfPDF link annotation
    • http://liyangah.com/Upload/file/ponirinozitirigaje.pdfIn PDF document text
    • http://clarkstownhs64.com/clients/2/25/255c49a504cbad61718694d8b78dfcdd/File/luluvizib.pdfIn PDF document text
    • https://anaksemut.com/contents//files/fopelofifomojepam.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/97e54033802ea61344ca8c15279caf5c/xikitekog.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/3akhvcn77fckrbn1tudr65a0q4/fofojavedefafaz.pdfIn PDF document text
    • https://kodcomputers.ro/2664/uploads/zutabepixusi.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/35fbe0ecbff906e76437cb68a692022d/tewanaduwumuvuzobiganenor.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/57801f10dfde4c6c59313390518d08cf/wujotifamewesunisixudire.pdfIn PDF document text
    • http://1mosref.ru/ckfinder/userfiles/files/mipewazixunakigosufusu.pdfIn PDF document text
    • https://eternalbliss.net/file/subepabokulibulo.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/5be1a8f29149641fa432b5237206d7f9/mipel.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610062c30d01a---90294937824.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/mezekuvivuxonorusuz.pdfIn PDF document text
    • http://poltinka.ru/userfiles/file/86957741708.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/5047e6bfc54b7d962c66e22dd91195f5/46487672579.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/827cfb889a77ad874e6634aed8257ed5/3888590318.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/tfs6uvo8dk9niqj8rgk31o4a46/43758149002.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=is+star+wars+galaxy%27s+edge+in+california+adventurePDF link annotation
    • 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_off00012bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF1 17636 bytes
SHA-256: 4f0deadcb8f95f7c023dd475f60472507d334362e932fc8ee23f0adb3c71e5e9
font_01_sfnt_off00015a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A5B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17272 11104 bytes
SHA-256: 11b8ada1e4c6eab69c1c53741be0746457fd5e31a4a035d437a524d4df2d40ca

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