Malicious PDF — malware analysis report

Static analysis result for SHA-256 603c49315ddbd340…

MALICIOUS

PDF

108.2 KB Created: 2021-07-31 16:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7f4c9f745238b4192fc79c9463a0fe28 SHA-1: 5c7d0bd51cae17ded6c2ac4cf1950ddfa275765c SHA-256: 603c49315ddbd34084d41ffd35266a127c5ab4e7519c9edbbc63d9fbf4b16a0e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. The heuristics indicate that the document is part of a link farm pointing to compromised WordPress sites, suggesting an attempt to host phishing pages or malware. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely involving phishing or trojanized content delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4492

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://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/84266be0cf7717a8d8383f160fc74f6e/xuwanogarog.pdf In PDF document text
    • http://neoneofytou.com/ckfinder/userfiles/files/84052868216.pdfIn PDF document text
    • https://www.peltonfell.org.uk/ckfinder/userfiles/files/vibibapavazupib.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b87c58acb3b---73832681557.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/co25kc3o42da05sm56nsrha8dg/kepufum.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/rotodadikenewepevorexone.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607fec3f4ec8c---numasenototuduwamul.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/12012057900.pdfIn PDF document text
    • http://highlandhighclassof1962.com/clients/c/c3/c330a44b04b080977bf299ea430a317d/File/surupasojatanogikoko.pdfIn PDF document text
    • https://canevastoilestjean.com/upload/editor/file/sabiguk.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a64b783a9a---78382957493.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/65964434628.pdfIn PDF document text
    • http://www.cddfct.com/up_files/file/rexavidevi.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/5c28d96fdb4530ecd7d1e2f686226b79/51712634375.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfc9b642b58---82167207254.pdfIn PDF document text
    • https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/6b89ad8aaacc84cca7a02b5003634036/66949443026.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/3adb7e5e2f7635d018073db140219f60/33777616011.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc9f33896a---11250024425.pdfIn PDF document text
    • http://yangs-ns.com/ckfinder/userfiles/files/20210627052103.pdfIn PDF document text
    • https://xn--bankkrtya-41a.hu/js/ckfinder/userfiles/files/bodevasilixosenizu.pdfIn PDF document text
    • http://nissanotogovap.net/uploads/images/files/sojaf.pdfIn PDF document text
    • http://df-2.de/images/daten/file/sozasevikobaruzufek.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/898e6eb3e26155a62d9c8506a257c351/33835613027.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7063d110b---vifojuxe.pdfIn PDF document text
    • http://makingthegradetexas.com/clients/d/d4/d4716c73f098ea79da165a2194b6736a/File/1112005591.pdfIn PDF document text
    • http://ecandrychow.pl/Image/files/donuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=hancock+whitney+bank+holidays+2020PDF 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_off0001813e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1813E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1