Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2d63ee5b3aede8…

MALICIOUS

PDF

65.1 KB Created: 2021-06-27 17:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1f1d409a15d3ce874b742fc155941986 SHA-1: e6bce286d66361a879d1e36522536edacc77d076 SHA-256: fc2d63ee5b3aede8ba1222530f2567d1f6d246a8b0be4d79c22f8e000c340101
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm with 26 distinct URLs, many pointing to compromised CMS upload storage. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple compromised hosts suggests a campaign leveraging vulnerable websites for hosting malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6960

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://crewmak.ru/uplcv?utm_term=swad+indian+grocery PDF link annotation
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0bc04d472f47dcdc19221d212dce1202/polakuwaloxexogenaludezu.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/42168181233.pdfIn PDF document text
    • https://amadesafar.ir/basefile/amadesafarir/files/jusapedumujiwawojofoze.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f7689591b---31260680788.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d7ecf814cd3---xisikolidupoluf.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/r9gtb21a2c98cu69h2suoqq34q/wituvopaleb.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/vididanojilamuzururuwome.pdfIn PDF document text
    • https://proxus.nl/file/nodadom.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/b1512580448395e877ffa132f18bdbe0/mokafivodejolurejewis.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/hln2d2ol4dsa3umgpntk36rhv3/95611860213.pdfIn PDF document text
    • http://thesnowmanicecream.com/ckfinder/userfiles/files/72966171944.pdfIn PDF document text
    • http://ankamet.com/userfiles/file/tilibidifapi.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c47b6e8afb2---lobixa.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/67028cd059e3e144c0743ca3d1783d17/zumiwagesudow.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/visavaseririfekozebunaw.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a915e45a1c4---bepekeselivizaf.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/rototumaxidugeku.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/wojitiwubuwo.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608675cb31ae5---xafefug.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/22f3f92a85bfbde1f1b4fbc3b8228253/sasevojisupofuzupawa.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b86c0e14a---kijijinuvenobupej.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607c285722bc0---37333739356.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1608166c809ec0---55780082287.pdfIn PDF document text
    • 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_off0000daef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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