Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e064ca7fce1a5d…

MALICIOUS

PDF

122.0 KB Created: 2021-08-11 22:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 08cab7f0e9572d83c710f3033d478cc5 SHA-1: 587cc67c19a615a6a8c33e9b317e43257100fe8b SHA-256: c2e064ca7fce1a5d5392f28afa9874d6d3bc3e6da71890282fab5184ba953fbf
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URIs, many of which point to potentially compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to exploit users via malicious redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7515

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
  • 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
  • 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://bbmint.com/userfiles/file/buzofere.pdf
    • http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/wudinosafomusunowemuduvid.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/277d88ab7e72d2139385d6baba442c31/porulexuleb.pdf
    • http://color-gateway.com/userfiles/file/baxurixekedatijakoz.pdf
    • http://pronobile.de/catalog/file/38058009574.pdf
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/77e1090d73df5d530e205a8721846c05/mogixilutepusudixev.pdf
    • http://aaaexpressac.com/userfiles/file/10078648266.pdf
    • http://chobacgiang.net/webroot/img/files/gapuwaxazaje.pdf
    • https://nikosdimos.gr/userfiles/file/99351872063.pdf
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/im9to6bq2m6p3iclsig93usl5c/84052646391.pdf
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c1886082400---25398372613.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9d0045d04---932865502.pdf
    • https://lee-trading.tw/archive/upload/files/bisopo.pdf
    • http://rockycheng.com/ckfinder/userfiles/files/tevilalelosuwonejegaxug.pdf
    • http://ampletrekking.com/userfiles/file/wirinij.pdf
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/lamovekevidojopoveti.pdf
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c5815cbec94---26966465958.pdf
    • http://studiotrusso.it/userfiles/files/79403374134.pdf
    • http://puzynowska-kancelaria.com/userfiles/file/wepujukerelagusuvimuwef.pdf
    • http://nirmalapublicschoolerumely.com/userfiles/file/3900444617.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160af804868e1b---5131543738.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160ec9c75e06b6---rajavawe.pdf
    • https://zzwgjx.com/d/files/44089519401.pdf
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/39112ec1834d05057966bd0a3b4c00c2/mumukosezev.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=gateway+2nd+edition+b1%2B+workbook+answers+unit+7
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bf41.bin
a567766f5eabe00a9ff63ce9052bfb503c71228585200fd562f4192e8533c613		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF41 10988 bytes

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