Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d02c13c0a5e125…

MALICIOUS

PDF

62.3 KB Created: 2021-09-07 07:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 47e8f1dcaad9a38c77b8d1b666528ae6 SHA-1: 261319d0c8d6068fc09a3d4e5cdd2c5311468428 SHA-256: 17d02c13c0a5e1258458619268453ab98bb24530efcbf6d9414775adbca8a914
162 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The heuristics indicate that this JavaScript likely redirects to external URLs hosted on compromised websites, suggesting a phishing or malware distribution attempt. ClamAV detection further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7090

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/1f3e6b7d8a16c5426c3a06aebbc897c1/fisiw.pdf In PDF document text
    • http://phunggia.biz/userfiles/file/27455216561.pdfIn PDF document text
    • https://jaiminsales.com/ckfinder/userfiles/files/resulogegapabosesari.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/7sv7n2rucq8ci8kp4gdfvfki9u/kutaxomogos.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b39adb21762---nopasusanejijosutuza.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/33969943145.pdfIn PDF document text
    • http://anchor-m.com/js/upload/files/86714299081.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/464a81437e46f1931d71b7140248794c/68791441199.pdfIn PDF document text
    • https://iguanapools.com.au/wp-content/plugins/super-forms/uploads/php/files/n3d4l6pbpkmu01edhianqo0ptv/17975087803.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609cefda7e627---17133285879.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/dulipaduvel.pdfIn PDF document text
    • http://begemot-rus.com/uploadfiles/file/2021052020521873499.pdfIn PDF document text
    • http://dailyxedayhang.com/userfiles/files/ruxinaxefuluvubokaj.pdfIn PDF document text
    • http://hondaototanan.com/upload/files/fukejetofeketorami.pdfIn PDF document text
    • https://binarbaidequipment.com/public_html/userfiles/file/68874828733.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbd0dd6111e---88794844199.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/24a0f404ad37123419ac26d5a2bd4ac4/79657216516.pdfIn PDF document text
    • http://bendhigh1970.com/clients/1/10/106e6567aa8bd3cecf4080670b11bd10/File/29007492867.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/fisowikufufuni.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/ktoivsrtne3eesftnpmc4nin32/jifokigiwojedinorakaku.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/904256eab864052f105e225fb732d61a/12798081141.pdfIn PDF document text
    • https://loctra.net/userfiles/file/zexunirub.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/a3fc6702740d706eddd0b7c8a20838f7/pavoluxatesunixekejite.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=pioneer+car+stereo+mixtrax+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC615 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1