Malicious PDF — malware analysis report

Static analysis result for SHA-256 84150928a2841997…

MALICIOUS

PDF

69.2 KB Created: 2021-09-03 05:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5bc93feeab4859416f52e57636ba8b4b SHA-1: ae197466dffc6303606b6182563d2accdfdf6abf SHA-256: 84150928a284199703f63ff014391fbd459baf2b44dac8f48ca11165b1188153
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS upload storage or disposable hosting. The embedded URLs suggest an attempt to direct the user to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9156

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://polloricowings.com/uploads/files/dogudanagapu.pdf In PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608977b5ba7a9---79700165307.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/97012999215.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093cc3101b8e---wadakedosaborevawag.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607984801ba22---73707888553.pdfIn PDF document text
    • https://adikkedua.com/contents//files/61112365097.pdfIn PDF document text
    • http://heureka-cz.eu/files/tugamitemixamij.pdfIn PDF document text
    • http://patroha.hu/file/46605313214.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/08c81ea94cfdab67c7fd390e8fd04cb0/xurosarak.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/70j4vuevsbo8q5entvlno9a8k6/3310927019.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/ae2b2ff4c2ef5cdabdae15dcf41dfa92/kasijononotigu.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b31fc51767a---16498825701.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/xudoxiseborox.pdfIn PDF document text
    • http://brkvinc.com/userfiles/file/76823383414.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/zemujoposabapevowuvi.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/0b3c928db8de1388b4d2cc4236e07f93/50139511048.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1c5beb08ba---lapigazamibasusudodo.pdfIn PDF document text
    • http://mysistermyfriendministries.org/clients/85776/File/71878096719.pdfIn PDF document text
    • http://findplusltd.com/file/getokevulanikev.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/wukotoromawenamot.pdfIn PDF document text
    • https://mercerapparelss.com/userfiles/files/38714895515.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/cnaslkrca4mpc0795v7t7q4fna/tefaxobimegawunetamexeve.pdfIn PDF document text
    • http://hublihorse.com/uploads/userfiles/files/37694199049.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/43124cee032144c2a5c7c4576089e7da/8210906777.pdfIn PDF document text
    • http://quaretti.it/userfiles/files/vusitekaxabojopekasaxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=husky+air+tools+manualsPDF 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_off0000f775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF775 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1