Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f67500208326e95…

MALICIOUS

PDF

87.3 KB Created: 2021-06-25 03:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: de37c2fb9943df856989e4ce71f45607 SHA-1: dbbb5541ded0362a7dad0fff49ff0121538d8557 SHA-256: 0f67500208326e95b16399bf175fe92b92f21542b7f94cb53d25a7933224f41d
124 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to various compromised WordPress sites and other domains, suggesting an attempt to distribute malicious content or phish users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. While no scripts were explicitly extracted, the presence of numerous external links and the heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3951

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://www.odnpoznan.pl/fotki/file/file/21368246979.pdf In PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608611a9ea304---32895660820.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/bf2977653b687a829c88c4e908f7b228/43047713149.pdfIn PDF document text
    • http://nsck-cykelmotion.dk/userfiles/file/53154564072.pdfIn PDF document text
    • https://mides.vn/images/ckeditor/files/razusefaxivatadexalevek.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/gudavipilemexepotu.pdfIn PDF document text
    • https://shiphangnhanh.net/uploads/image/files/jifemewimesusewubag.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/4315c6e4817d4c3a724df9891d04d1ca/pemutiluvetetupelutupaner.pdfIn PDF document text
    • https://ikima.fr/uploads/file/fuvenepubikatenur.pdfIn PDF document text
    • https://stopserv.ru/files/file/bupukubawajam.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/cd95e0a300008bb668f6681a3081f6dc/52066067741.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/bda677763d04424f3120bc6aac3dfc1d/bebumogivutoki.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/dizebamumivisojomemak.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/53a23181313b1b8e406ae0f1fdf42c2b/sozadigezeli.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085174ada1f2---51174729310.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=sriram+ias+economy+free+pdfPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE970 5184 bytes
SHA-256: 56774dfa653e0d21fd79d5b509a588fb5c5b1097bc4e3273594dea776023768f
font_01_sfnt_off0000fae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE5 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off00010648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10648 11296 bytes
SHA-256: 949d4f2e15fb85c9caf102541fdfe36d97fef7c3be034ba8fea26b1e59903e55
font_03_sfnt_off00012c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C97 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
font_04_sfnt_off00013a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A98 13828 bytes
SHA-256: d8aa4384f81c88493908e17a50009591c67cc894a8ccf2ddbe40cd1bbcc2c72d

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