Malicious PDF — malware analysis report

Static analysis result for SHA-256 396d01bc99834056…

MALICIOUS

PDF

114.8 KB Created: 2021-06-27 06:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 38e37bba88ed5556b1d07238bed1b71e SHA-1: 7f1ee6f8e0c03a2f2ac7c41efe8f8d01c0892ed3 SHA-256: 396d01bc99834056d99f1f0e5941b6549548e60b62acd828a1be7d196bead8af
156 Risk Score

Malware Insights

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

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 WordPress installations. The presence of these links suggests the document is likely used for phishing or to redirect users to sites hosting malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://wastran.ru/uplcv?utm_term=way+of+the+cross+in+manglish+pdf PDF link annotation
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/92867042468.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/ginuvitobizoxojuxa.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f25a8984ad---fipaziselidisekipabuzeda.pdfIn PDF document text
    • http://moto-bike.pl/userfiles/file/52708485529.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/sd2ff558stmv7j8g779jkrvbo5/80870035785.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160795e74868e0---pezegolopipisetuxediloka.pdfIn PDF document text
    • http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/69280986729.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/64147582508.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b87d7a4aa9a---14957695861.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a9939e8c671---73244376664.pdfIn PDF document text
    • http://jpbullies.com/clients/2/2c/2c827f09d77a589c2c5c7da8c033a3f4/File/zemamirudagomeda.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/1qav9q1t3jkhqpdrpio2mp7jq0/67771717417.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/439f2c199d3f1b7b32148eab1f0caac4/pumadesaxizexelonirez.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/rikazejobufibo.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b399dfb2762---43986458704.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/98a302l6turci37ri951m4uhh2/zafanutasigetukereg.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/6d6627fec5e43f1bb2a0f164c1e9b131/21926554371.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075f517d71cd---gasefikimapifugikulovofos.pdfIn PDF document text
    • http://usmleworkout.com/files/file/41843469420.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/89168267623.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/81efb1f29816d2ca6b7f0f503a33a1b2/36774205855.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/40c5ac41be1de8eda0fe3c039489a315/56892682937.pdfIn PDF document text
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF3 23012 bytes
SHA-256: 7fba512530f58528c47578b5a74ff09c07caf4ad6ad6113e8b7b95dab4c2eb3d
font_01_sfnt_off00015e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E8C 11176 bytes
SHA-256: 171e33a8eb7ce6e18574601aa21b9dcc0bf2fc34af0651982914c618869599c3
font_02_sfnt_off00017855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17855 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00019067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19067 17152 bytes
SHA-256: e256d3685d249afead909eac9ec69f15625f0d61041404169f874459b0d2964f

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