Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bcabbca750c27e4…

MALICIOUS

PDF

72.0 KB Created: 2021-09-21 11:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 6a64a893c959076d9b71ea05ca4cfc96 SHA-1: 0a87af917aeeb012d776434c3a15c22dc3b60d40 SHA-256: 0bcabbca750c27e467aeeb83866913bd986f0640ec2706e6da779833aaa9f9a2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to multiple disposable hosting domains, a common tactic for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. The embedded URLs suggest an attempt to redirect users to download potentially harmful files.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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 http://farashimirooz.com/files/sepixirirudakejuxopo.pdf In PDF document text
    • http://apicn.net/upload/files/zexipoboxabixeboxasefeled.pdfIn PDF document text
    • http://thienthaopc.com/upload/FCK/file/69392153621.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/ffd53a4d6900676c5dcd8ab4ed33cd67/sefesavodezeleveg.pdfIn PDF document text
    • https://renebeumer.nl/userfiles/file/pazamepumutika.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/9612256306.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613556e45f525---garavewujedosotorede.pdfIn PDF document text
    • https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/81708137897.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/161434e9c1ff00---soniragapalexasurur.pdfIn PDF document text
    • http://santeh.md/img/files/22253018560.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143a64d5982b---zexujoxeb.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa469a352b---jipafewuwarotegujat.pdfIn PDF document text
    • http://yh-nutri.com/filespath/files/20210915222418.pdfIn PDF document text
    • http://fizjoactiv.eu/Upload/file/54835933112.pdfIn PDF document text
    • http://cieplej.pl/imgturysta/file/64910960163.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/vintkldss4cs18k6v8aqkcceb7/xamasunitop.pdfIn PDF document text
    • http://www.satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/53453195760.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/julifobema.pdfIn PDF document text
    • https://anyimaker.com/upload/users/files/tiramowojisul.pdfIn PDF document text
    • http://bikaji.zohukum.com/ckfinder/userfiles/files/felozitibuxa.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/27781974992.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/7i413tkerck2o89451vhejehab/rorefapojun.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/36652415390.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=earn+to+die+2+apk+mod+downloadPDF link annotation
    • 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_off0000d96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD96F 17416 bytes
SHA-256: a2b13d01fdf92e63cc533beba6a967330110a9179bc887723b90e1754dc7ee03
font_01_sfnt_off0001064f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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