Malicious PDF — malware analysis report

Static analysis result for SHA-256 b64173ecb67922dc…

MALICIOUS

PDF

112.8 KB Created: 2021-06-30 08:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7ffbe3e8987f5d35e455b6687dd58037 SHA-1: 4f06b80977fd9076584a2057a68b5fe1c6182830 SHA-256: b64173ecb67922dcf4bb4484b3b636711e89f746bdf09796b7b6d5c7b8be2f1c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to multiple compromised websites, suggesting a phishing or malware distribution attempt. The presence of 'download x force autocad 2014' in one of the URLs indicates a lure for pirated software. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cuisinescartier.ca/upload/editor/file/ziwevikinuwilovol.pdf In PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/v8vam7mv17pdg2hsfpmgalu803/34435909008.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/diguguzusekogepugo.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c62a259bab---rirojakutemofoxo.pdfIn PDF document text
    • https://dietmoitangoc68.com/upload/files/lekudiwisopumipepowivi.pdfIn PDF document text
    • http://ibtaker.ps/userfiles/file/jatoxubopuredulaxijupewil.pdfIn PDF document text
    • http://larrysiegellaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/65965380361.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/q511nb35movg9jpkev0b53vn74/46880655862.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094ae7925312---junojitexedajibekum.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef5d3aa3b5---fanazudifobizagusup.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d6aaf089e4---zagozime.pdfIn PDF document text
    • https://motacademy.it/file/72223372106.pdfIn PDF document text
    • http://blatt-gruen.ch/files/vemufibipufalonagemo.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/93282a4969e21b3488c40b87b1a5208c/tamorekimulazanoloje.pdfIn PDF document text
    • https://stratasphere.online/userfiles/file/86356696785.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092030dc6e58---15801975383.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcc3c8ec14a---finezedodov.pdfIn PDF document text
    • http://tydafa.com/dafa/uploadfiles/20210618021024.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/kn7t0e0mdb83a4pbaav3s76vln/mutiw.pdfIn PDF document text
    • http://sicompk.com/survey/userfiles/files/99623558536.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/lomapu.pdfIn PDF document text
    • http://mhinflatable.com/upload/file/fisupojobitunot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=download+x+force+autocad+2014PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16297 23096 bytes
SHA-256: 5ab44810b6a1ac9d23cded35147d01ab90f5501c840c35c9e78edbda36d69ef9
font_02_sfnt_off00019adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19ADF 10872 bytes
SHA-256: 3fabf36257ac30e2b631851d923e96f27f82e0227e8685e51d7a7970b9842873

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