Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ed9e292f343990…

MALICIOUS

PDF

99.6 KB Created: 2021-06-09 07:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c7bd7eede42d83c99456cda03c7fd0b SHA-1: 7bf72ec398b8b423c06b4abdeb7d1c64cd38a22e SHA-256: 70ed9e292f3439905b511ac2e1bde3bb43173b18a4e0cdd930a324b3e8efc7e3
154 Risk Score

Malware Insights

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

This PDF file contains numerous links pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs suggest the document's purpose is to redirect users to external sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8783

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://smidgel.ru/uplcv?utm_term=mod+immortal+taoist
    • http://ahchala.com/img/file/47559764893.pdf
    • http://szpital-sulecin.pl/images/fckfiles/file/2439313980.pdf
    • https://ayurvedaemart.com/uploads/file/jisogaxag.pdf
    • http://adance0112.com/upfile/editor/file/mufewefekipotonujop.pdf
    • http://datavincity.com/uploads/ckfinder/files/94986357122.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/mtpiklrgp003qr2psneumq4hgb/wejofifozexeveb.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afbac13e6b1---nuseninojiwupif.pdf
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/f705e55f0f2d112ca318d44dbd92a48a/romule.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce6aee3fbd---wabepil.pdf
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cdaf59252d---55561239810.pdf
    • http://pc75.net/upfiles/file/1621484602.pdf
    • https://daxitrip.com/basefile/daxitripcom/files/jizifimogiborejowemiketo.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/emd8584jjplb14clack499qeq3/50026991083.pdf
    • http://mgocsm.in/userfiles/file/33055384079.pdf
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073f70a057db---xuwadosunebenukapu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001548d.bin
8294142f630b74b50ba3beef9afbdfe02d16271e8c7264feb541342b7a0a67c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1548D 4976 bytes
font_01_sfnt_off00016565.bin
a5917b9ef4d7cef6e3c07fdf68ee3c205752bb2da33fa2a69ad1b765168c595a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16565 12684 bytes

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