Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c460eee27cb482…

MALICIOUS

PDF

102.3 KB Created: 2021-06-10 17:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b5af23dd4638825900aaf4c3cb523e54 SHA-1: 0101c84df5194d49859bbc9f627c3d343a7ef79d SHA-256: e5c460eee27cb4822436aab611aa596c8105698c240d35f14bb7636bae2a00c6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many hosted on compromised CMS platforms, disguised as downloads for a popular game ROM. The embedded URLs suggest an attempt to redirect users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6246

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://synerhu.ru/uplcv?utm_term=legend+of+zelda+a+link+between+worlds+3ds+rom PDF link annotation
    • http://3bbb.fr/ckeditor/upload/files/tedilefudoreviga.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/a6259a625005e400a5e2336cedfe5f1a/82026107676.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/3homaitidd8rjqd55g0uuqibm2/47660861515.pdfIn PDF document text
    • https://apz-arte.com/ckfinder/userfiles/files/44453352667.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/javixevabenunejej.pdfIn PDF document text
    • https://edarky.net/data/file/jipagexulutetorotafesitad.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/gibuzi.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b455cc34a52---69052242812.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/rajepajosa.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6d093a293---tupiguwo.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/bl3h44o70hv047vl21hrb3crg8/89523506099.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160afad0001f80---lijumulafunifufumuv.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/a4de199cf2165449b86942aa20521df3/22192300265.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/sanuragetegikeviwix.pdfIn PDF document text
    • http://aggengr.com/uploads/CMS/file/21578814610.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000149f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149F3 5352 bytes
SHA-256: 868712a35ea3760a155f4a8e22ace68ee8e42b65b12549bb95905b8dc273ac01
font_01_sfnt_off00015c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C95 5676 bytes
SHA-256: 9f546ab9e04b176de267e3d49b814ab44ff4e3cac44a047c90b6a88df1bba8f2
font_02_sfnt_off00016ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FFE 13368 bytes
SHA-256: 7d785442e7c627eb7b519ef067543b788fd6e47c593a7bcf2157bb047569790d

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