Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcae219a97448adf…

MALICIOUS

PDF

84.6 KB Created: 2021-07-03 05:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bb8cf4414cc7045a8ee03bccd76b522a SHA-1: 690868202da5e299050515c3b7f36fe1aca432b5 SHA-256: fcae219a97448adf3af02e18646ff56227393ba9daf5b5464ae265c26f2d2a33
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs pointing to various websites, many of which appear to be compromised WordPress installations used for hosting PDF files. The presence of these links suggests the document is intended to redirect users to potentially malicious content, likely for phishing or to download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://queure.ru/uplcv?utm_term=eating+the+skin+around+your+nails
    • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/d328a51f1fadbe1f89b8071798561722/89974337958.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160affcba91f9f---20332247549.pdf
    • https://miet.hu/kepek/15574783742.pdf
    • http://vienkiemis.lt/app/webroot/uploads/userfiles/files/622102359.pdf
    • https://marljivo.hr/UserFiles/files/33812145528.pdf
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607de871da2d2---65881535612.pdf
    • https://implant-drill.com/userfiles/file/77031491294.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/75049636881.pdf
    • http://haenuri.net/ckupload/files/60009743572.pdf
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16073d33de9056---60610337805.pdf
    • https://recapress.com/ckfinder/userfiles/files/sorobulomilubes.pdf
    • http://chsbicentennialclassof1976.com/clients/c/c2/c283bfa2537a82fb79a670aa087b4bd4/File/rikasokunupikepumelazax.pdf
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16092936565751---kalefegapefulasal.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160767facbc8bd---4605727.pdf
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c542daf753---20252712309.pdf
    • https://aashianarealty.com/file/64879525589.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a650bacea9a---zojuraranoleliropalonamaz.pdf
    • http://moonlightmontessori.com/upload/files/lesizogupa.pdf
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607595c983368---9391178915.pdf
    • https://combrooncom.com/contents//files/wezonabogukonolexaberuzuj.pdf
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/778d0ef66309a37abe25ffcd3cf2d295/90175143406.pdf
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16092d738d72ca---13246711502.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE96B 16792 bytes
font_01_sfnt_off0001017d.bin
ade85ad0c2940d406a8f9139971b7210323911ace11606cdb72516e0a7ce4b24
pdf-font-stream PDF embedded font (sfnt) at offset 0x1017D 16876 bytes
font_02_sfnt_off00012dab.bin
b8e1f9b21715a0e6a813325a47c12004d86b65aeacd81e34b3f07d0368b8c777
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAB 10816 bytes