Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed2db93e2b9ebd2…

MALICIOUS

PDF

92.9 KB Created: 2021-07-25 00:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4b73741f75243737ddf462624086c45a SHA-1: e008d6ed01840639defc034ebf9d0f1c0514908a SHA-256: 3ed2db93e2b9ebd23e42d4b8be107abea5fed666c1b819eb7dd11b549b94be02
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the structure and URL findings are sufficient to infer a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9209

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609477c174436---4518407581.pdf
    • http://euro-ex.com/images/blog//file/67929849947.pdf
    • https://palet-school.com/files/files/10124131986.pdf
    • http://bfr-bialapodlaska.pl/userfiles/file/lomuku.pdf
    • http://nova-auto.com/upload/solive.pdf
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc86d592ccb---niwiroxizalumuk.pdf
    • http://agcslohian.com/userfiles/file/53287180726.pdf
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/291199657f492867156920583b349146/ferajepekomimuwuwe.pdf
    • http://www.aadhar-interior.com/userfiles/file/vapakotijitugegowafesef.pdf
    • https://africanresearchcenter.com/userfiles/file/52443320664.pdf
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/8e07cf76ce42c746e2db24998ddce22a/noxukewijefazu.pdf
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7730ccc1d---nugib.pdf
    • https://slezanie.eu/userfiles/file/wowinupodogupijo.pdf
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160867da5d2928---mapazajoz.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608505e4de8a9---defivijogowokan.pdf
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c215ac57c---jawod.pdf
    • http://cesurmakina.com/userfiles/file/39937572360.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160fc86a56ed8e---nuvikojijib.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bed709bc4c6---pazuw.pdf
    • http://cdmatik.com/uploads/file/28828052471.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/6bbd571e9610ab4857a5ef2100dfced5/78275235940.pdf
    • https://horizontire.com/userfiles/file/39925866944.pdf
    • http://iziusb.com/userfiles//file/62869609073.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=what+are+the+8+formal+elements+of+art
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116fa.bin
0e6eb0f462f729dac75e8caab982594772315b058fefcb0e8e298123dfc6176b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116FA 17208 bytes
font_01_sfnt_off0001432f.bin
8f6e95ee1036e1566124245560c57bd37f2904356fac526f0c2666274b5736c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1432F 10588 bytes
font_02_sfnt_off00015b46.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B46 16792 bytes

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