Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00d361169f76391…

MALICIOUS

PDF

62.1 KB Created: 2021-06-26 06:35:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 566f52628019a1f7f7cd89fd46b52c2c SHA-1: a2beb79d24c24241191a695b2b8482122f74416f SHA-256: f00d361169f76391c3cf73a6c5d813a4d09fe9174f624350a537da71b4cc491a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised CMS upload directories, suggesting a distribution point for malicious content. The PDF structure and link farm behavior are consistent with phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5125

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://rideabikenews.com/user_img/files/megobomopivobonid.pdf In PDF document text
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/ca7587db7abece9f96dec7b6c041d1f9/wejunaginisexig.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/92964629349.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a81c60f0cf0---bibofurozamekosagas.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/7d57f6be8598eb8eeb04a4acd2490362/sojugifofezov.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/damexofisewip.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5687ca000---26729019388.pdfIn PDF document text
    • https://cuisinescartier.ca/upload/editor/file/fobepataduwugog.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/zonuxepulovibe.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094a30c0fa1b---36207132535.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/vppa3kh6gn1euvrko552lr40u3/4582148788.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f296a5897---sebaxuvusijubelakaloto.pdfIn PDF document text
    • http://capitaloffice.pl/fotki/file/mulotuxuxepogatuwuxikepa.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a8310b75a---raluparisago.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/fevikexig.pdfIn PDF document text
    • http://wintec-samu.hu/uploads/files/34276911982.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/77059124688.pdfIn PDF document text
    • http://www.dilipprabhavalkar.com/images/file/pabutilebutok.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857b50c295f---30448985421.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/57cc19dd40f1b8bc4e1ff526ade86dab/paxopivulo.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/n3drr76vkq6v3727l7hc6400mj/wekofilotumopukomek.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/rupofafebigixitidokulow.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/80881001174.pdfIn PDF document text
    • http://dekoblickfang.de/userfiles/file/vubigemunevovovi.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/dq0ic8h30ap427jfrkns2ut9a4/rasulororumakusuzemake.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/t5n8i0ea4ljsjh5p3qg7c577th/zanenugot.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/d29c7df8d274111f7a3b5cce762c600b/66919612177.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=wholesale+glass+beer+steinsPDF 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_off0000bf7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1