Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85309760a7eee4f…

MALICIOUS

PDF

73.8 KB Created: 2021-08-18 14:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 4782581bd6b7e87ba2134271152a7f74 SHA-1: 5e8dae2f0edca9576e732ec7a2f89c77cf0f9338 SHA-256: a85309760a7eee4fdd8d852b40bb962f91edf181f7d988f6979684baca950902
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm for malicious purposes. ClamAV detected this file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. The presence of embedded URLs and the overall structure suggest it is used to direct users to potentially harmful content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8477

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 https://aventura-agence.lu/userfiles/files/torutesudemub.pdf In PDF document text
    • http://ats-dz.com/userfiles/file/84295956464.pdfIn PDF document text
    • https://dangeloremodeling.com/nbloom/fckuploads/file/51340892073.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/rpapunm65m2inb1o1fsbbokb86/54750550912.pdfIn PDF document text
    • http://christopherspubandgrille.com/userfiles/files/73755663250.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/89647972887.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ebbb0d6e9---nijudofasetidovaxapi.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/161106051e852a---65863887753.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9195e37c6---32288766517.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/zekobefake.pdfIn PDF document text
    • http://savitaco.com/uploads/images/files/zokufukilobonasomax.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/6d042057932abf631df29bae324ab2c7/xetanirujepesopi.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/aa31df83c237519831f9374b0735259b/89217132801.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/2983283013.pdfIn PDF document text
    • http://spbi.cz/res/file/demisunofowugoledizike.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc67765408---rarerazuzebenadeb.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/1bbb67989bf4cad55c7a3314f6a29ced/68671289903.pdfIn PDF document text
    • http://balone.net/_upload/file///46686004872.pdfIn PDF document text
    • http://touchpanelpro.com/upload/files/futuwomupovigize.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1608b41bc23977---18336996611.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/f1dce8431dab1d148cb3752408a5e630/vuzojamumodazenazobuvewi.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f93111e7a4---40266318378.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/ccfe4cd00b83ec62c6c6f8bc27025ec0/87855875337.pdfIn PDF document text
    • https://solener.info/ckfinder/userfiles/files/fapakegegoxavuti.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=sky+high+movie+in+tamil+dubbed+free+downloadPDF 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_off0000ea16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA16 17140 bytes
SHA-256: 2922c3ddc575a2851ea593184a928826ec6a8d5213cb7131c72edf0b4f5d4bad

Open this report in the interactive analyzer, or submit your own file for analysis.