Malicious PDF — malware analysis report

Static analysis result for SHA-256 89eceb00b4de998b…

MALICIOUS

PDF

88.8 KB Created: 2021-06-26 08:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 63fcb20679e7e4d6816d2d91773bedb1 SHA-1: 656cdda097288946e12a91fd122bdb6719933794 SHA-256: 89eceb00b4de998b765bc82c166c5aeb24890bb32ea41466762e550060809e55
164 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The document contains a link farm pointing to compromised WordPress upload storage, suggesting it's designed to host or distribute malicious content. While no specific script was extracted, the presence of multiple external links and the 'urgency lure' heuristic suggest the document is intended to trick the user into clicking through to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082faa9b5637---kizaseteb.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160a434c55ba83---78747393550.pdf
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b0327bcfe---jetididesape.pdf
    • http://shinies.ru/img/lib/file/wojajunegekelofumoratal.pdf
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4b87ad5482---zolunoj.pdf
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/jf0lav38i44vdiev12ui70ve43/35364934668.pdf
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a52e5636---zokisegeporonad.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160821f206d700---kolin.pdf
    • https://novahealthclinic.ca/userfiles/file/88778707311.pdf
    • https://uniqrelation.com/userfiles/file/16225438485.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/10a50d09b50d31b410265ce5331a970d/xuzenasonebefijebivokesot.pdf
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bbc544f73d---wazutesiradilado.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cdc75b11998---labobejozebubowigekavoki.pdf
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd5684327f---79785744594.pdf
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/f7e847d9acfbca66ca13b89559403a10/xurujizan.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/08f3b8d1c108d613269a1a1554d265b6/27130573619.pdf
    • http://ciskmv.com/css/file/3382056556.pdf
    • https://bdsvieclam.com/upload/files/piwuri.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da31281dec---siwedajumugino.pdf
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160917b7134d81---wapazu.pdf
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16099ce0245ccf---rexunevilozuniwokuz.pdf
    • https://consurs.ro/ckfinder/userfiles/files/46610573105.pdf
    • http://vmkmsz.hu/userfiles/file/gubuvenobejutosuzunodanod.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=scurvy+symptoms+and+causes
    • 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_off0000fa6f.bin
e18266558dfba03c673b8b4a38248b617e81b52373c7eaac15ac8b2b13ae13c2
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6F 16408 bytes
font_01_sfnt_off00012504.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12504 16792 bytes
font_02_sfnt_off00013d1b.bin
89a5e6663c7775f405324a74a7e80b0d324beb243b549b73fe8b30f36adf5119
pdf-font-stream PDF embedded font (sfnt) at offset 0x13D1B 10892 bytes