Malicious PDF — malware analysis report

Static analysis result for SHA-256 7260c273d81eca4f…

MALICIOUS

PDF

119.4 KB Created: 2021-09-06 12:04:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: dac692d13be4945e8a2817ec63ec1a3c SHA-1: b5e1745a1ab3d420362b74b22b8de02f3453f880 SHA-256: 7260c273d81eca4fae73c2104311f15fef6ce83fea0ee531afe3f50f1682520a
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS uploads or disposable domains. The presence of multiple links and the nature of the hosting suggest an attempt to distribute phishing content or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6796

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://laborke.ru/uplcv?utm_term=qumi+projector+q5+manual PDF link annotation
    • http://talk200.com/admin/admin/uploadfiles/file/17331064302.pdfIn PDF document text
    • https://delaneyllc.com/ckfinder/userfiles/files/37190625766.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/80942003272.pdfIn PDF document text
    • https://tepihtrava.rs//files/tonemu.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/medumedikoxesilofupal.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3ea8e4567---sijutugitu.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160839d66060ee---75412703873.pdfIn PDF document text
    • http://shiokuda1.com/contents/files/felagizurunusirimug.pdfIn PDF document text
    • https://securitydm.eu/slicice/file/83609117395.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/df3911f1afcfe913af644d395320f614/pijaguzefebe.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16094cbdc072d1---26758791637.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/2260509451.pdfIn PDF document text
    • https://gospel-streams.com/asset/ckfinder/userfiles/files/7012491076.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607580ffd4fd8---setati.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/warubenuwol.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/77256294776.pdfIn PDF document text
    • http://upoart.com/ckfinder/userfiles/files/dizefuvunuxiwifam.pdfIn PDF document text
    • http://devitohomesorlando.com/userfiles/files/21054660082.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/50172800994.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a31b8d0e5c8---gaxemonezipajijowafivu.pdfIn PDF document text
    • http://fabtur.ru/upload/files/xemetibegukuki.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0e4235313---mefukivuxo.pdfIn PDF document text
    • http://petraifevronii.ru/ckfinder/userfiles/files/45134675879.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d73030b6d23---59505040789.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/20217192134176432.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_off0001b423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B423 10936 bytes
SHA-256: d16bf30cf58d380f19343a12238f9c93d2e21ce59fd3ce0b7fdb502d24a489e7

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