Malicious PDF — malware analysis report

Static analysis result for SHA-256 2320c9ba352c7a36…

MALICIOUS

PDF

73.4 KB Created: 2021-06-27 01:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 7a4c13444f368062ef550f37fd218a38 SHA-1: 14974d6a68da8a86ad0fd9cfccbc330f5775df07 SHA-256: 2320c9ba352c7a363037526de1b4ac9d20f861a39ded6226c952e901bbaa40b1
124 Risk Score

Malware Insights

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

This PDF file contains numerous links pointing to compromised WordPress sites and other disposable hosting. The heuristic firings indicate it functions as a link farm, likely intended to redirect users to malicious content or phishing pages. ClamAV detection further confirms its malicious nature, classifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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://medvor.ru/uplcv?utm_term=basic+rules+of+football PDF link annotation
    • https://artenika.pl/fck/file/46377908371.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/zijajevagema.pdfIn PDF document text
    • http://benetalent.com/upload/files/97290316586.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/vidojuko.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/9m9sc9nq7vejc1c114dfaq7dal/342862719.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/42ef02de457660b3ac095fd9a4d18b98/legeka.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d20bc43c7f2---vujepelom.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/09c2e1889c39ba40e9cc6e2ea1a7b521/62564765109.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/a47054e9d77786b5d25ceebafd2aac92/gowakupufa.pdfIn PDF document text
    • http://travisreunion.com/clients/1/1d/1d9c560ef9ee6310b862f4c9d288d7bd/File/tetilidu.pdfIn PDF document text
    • http://voszveszprem.hu/_user/file/53170908618.pdfIn PDF document text
    • https://matskaren.se/anvandarbilder/203/files/wusofepujetiket.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1608c05b46dd95---pomoxemu.pdfIn PDF document text
    • http://bet-balance.com/userfiles/file/dagowafaduj.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1967563e2---19535647080.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16092c03cb4cc7---bofoxobiwixemukewo.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aac0f2ecb80---kapovadikililorelel.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe3be237d6---tobozeleniresuzojopu.pdfIn PDF document text
    • http://novussiteyonetimi.com/uploads/file/bigajazapabemixumaditunot.pdfIn PDF document text
    • https://werbemittelag.chupload/file/99840993206.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b49752f1c6d---ragifezewipa.pdfIn PDF document text
    • http://tropo-design.com/ckfinder/userfiles/files/sadulukixuli.pdfIn PDF document text
    • http://vitajeans.com/ckfinder/userfiles/files/29775694268.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e5971eb1c---61121030748.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED54 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001056b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056B 10516 bytes
SHA-256: 4239a6136e7303d5cd5156a88530fcf973cf180770e2abfc863c5777272897b8

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