Malicious PDF — malware analysis report

Static analysis result for SHA-256 649f05a97cddbad0…

MALICIOUS

PDF

70.4 KB Created: 2021-08-21 15:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 077387c45c49547965aaa527a0c54b52 SHA-1: 0815359590495421078fcf4ec4072c72f6fc29ac SHA-256: 649f05a97cddbad040ff7cc553ec717be23e762bfc64361cc126b8d1a913bfe3
154 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9634

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=garfield+walkthrough+scary+scavenger+hunt+2+game PDF link annotation
    • https://bnbtravels.com/ckfinder/userfiles/files/3846698712.pdfIn PDF document text
    • http://gptools.net/userfiles/file/53762696682.pdfIn PDF document text
    • https://sharpconsulting.us/app/webroot/ckfinder/userfiles/files/pikedugokogafufasizofu.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/58378121973.pdfIn PDF document text
    • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/33899591556.pdfIn PDF document text
    • https://steklo-shik.ru/userfiles/file/72163414908.pdfIn PDF document text
    • https://mygrind.ie/userfiles/file/bavag.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cecd03dd41e---gefuvinef.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/73d53b553651546c28992784daf0bcb1/66482797367.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609858778e987---kanupikedalivos.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/44a72bd7f3515357330fa301f3b6c948/55475673324.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c96fe7e36b4---rijibufisexalomutafetezen.pdfIn PDF document text
    • http://xn--l3chcucnqd9c0eua7b1k.com/user_img/files/risurim.pdfIn PDF document text
    • https://lochoanggia.com/upload/files/27927426603.pdfIn PDF document text
    • https://orldoc.ch/wp-content/plugins/super-forms/uploads/php/files/dt26u4l2rdbv5gnl15ibjm8785/78047649788.pdfIn PDF document text
    • https://www.benkorner.nl/admin/library/ckfinder/userfiles/files/2111741894.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16070b6e803b5e---33667140933.pdfIn PDF document text
    • http://4yoga.by/pics/files/jovuxamasarojare.pdfIn PDF document text
    • https://verredistri.fr/xmedia/file/nijotixigevagiwukul.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/zelubilirumow.pdfIn PDF document text
    • http://webbuilders.com/files/file/nulodebavunalezovatet.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF10 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF722 16036 bytes
SHA-256: 519801b91d1e8d48ccf49c5f8335af464cea001d0344ce049b8488adb5df6e7a

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