Malicious PDF — malware analysis report

Static analysis result for SHA-256 028bd5962741a9de…

MALICIOUS

PDF

65.0 KB Created: 2021-08-01 19:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2f861fc3151317366468ffe98b4befeb SHA-1: 3385e35fcad7ee6dc219dca25071637d65c0607a SHA-256: 028bd5962741a9de062975a587b172e341ed5c5c073657623a3776a8e64ad10c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this. No scripts were extracted, but the overall structure points to a malicious PDF designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9521

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://biaikatolikus.hu/files/file/luxekevevomibelulusaginet.pdf In PDF document text
    • http://brkvinc.com/userfiles/file/2319221962.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/kmea5bmeiq5nbl93sllm8foa3o/rikemukumakofokebijabu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099ad5fb5ced---7258302957.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/2256904d43bacd5ee59f0e1d37e14cf3/27133703144.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b6478dc6435---zesiragixezopij.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608771308f08d---jogara.pdfIn PDF document text
    • http://g-shocktou.com/user_file/file/65387719910.pdfIn PDF document text
    • http://siripanyalamphun.com/user_img/files/32570568836.pdfIn PDF document text
    • https://lederstuhlshop.de/ckfinder/userfiles/files/15003679758.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b561db9bde1---tuzenavoretaratofap.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/gusenimubenoxojado.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/jame3f1ceappisslao8c61819l/wefonedudelevasimisediboj.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/titewuzezesiri.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a8477321cd5---tolemikutujumi.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/qi71o7ictr8aptoi4j45smpqa0/piranopabejesikimade.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607df580bf814---79718886289.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/84579405932.pdfIn PDF document text
    • https://almuhja.net/ckfinder/userfiles/files/vexixinipovaxakemenikanus.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/414142a6713b3676c0071f5f3d41c50f/87333056451.pdfIn PDF document text
    • https://mimpishio2bet.net/contents//files/8070497383.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+remove+battery+from+taylor+scalePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DE 10696 bytes
SHA-256: 8080de1b0a627a25e0a615b6cf8d639d89b84b755eae4eff60b2164d61d714af

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