Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af2f87d65dbf98c…

MALICIOUS

PDF

58.2 KB Created: 2021-09-06 03:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9f426d1df9a9743d3aff58179e0c52c5 SHA-1: 353fbfbf5f0d7d5e6176d4a2a837d3142939ab9c SHA-256: 0af2f87d65dbf98c4ec8bb4e08d5c9b88a2dce8746997cc1f9fa6abcb95b1b4c
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised or disposable hosting domains, suggesting a link farm designed to redirect users. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. The primary attack pattern appears to be luring users to external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7666

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://vejwun.cz/images/28385210566.pdf In PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3407a77d3---37552531793.pdfIn PDF document text
    • http://baobianhkhang.com/upload/files/72370892666.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/nojipuriz.pdfIn PDF document text
    • http://tinavaron.com/ckfinder/userfiles/files/xokobewarifirumumujetuse.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/zedoduxejin.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/1d3a73d582c1787572f87dd1610593e8/98454878494.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/j0doqu1tc478b5a2fc9g0aerh0/danib.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/wuzaramuvu.pdfIn PDF document text
    • http://culbertsonlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/93261477538.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/086d9ac402573f1be1ae23c522a1011a/99712223653.pdfIn PDF document text
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/ef10362e511f187e9865ad48b4b55bfe/firimi.pdfIn PDF document text
    • http://canyonoaksmtg.com/~duckdi5/canyonoaksmtg.com/content/file/75426349965.pdfIn PDF document text
    • https://dovolena-jiznicechy.cz/uploads/fetegurugepizajis.pdfIn PDF document text
    • https://maydangson.com/vietkiendo/upload/file/kagozagosotarewujomeg.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4af72cec1117100373b333ce0499caa7/92419803434.pdfIn PDF document text
    • http://metalzilembo.it/userfiles/files/mupanawe.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/0387d33bc405631befc6ee21c7a9a167/seduweja.pdfIn PDF document text
    • http://huanghels.com/filespath/files/20210824110156.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/gbjngeomab425fs0niqp0i2ia3/jabozixip.pdfIn PDF document text
    • http://mitchelllawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fidabexulekenudej.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608670d35c2e7---sivupemopusaxizakij.pdfIn PDF document text
    • http://mstreatmentadvances.com/userfiles/files/fafisameje.pdfIn PDF document text
    • http://burattinojatek.hu/userfiles/file/zoxevadolada.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=shatter+me+pdf+google+drivePDF link annotation

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