Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec6c397b2511c11…

MALICIOUS

PDF

686.6 KB Created: 2021-07-01 12:11:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: e7bd881e093175f2ec8d451ca4fcb461 SHA-1: 3d1cec65a1cb56bb709fc32ce440d74e5bc0129b SHA-256: 7ec6c397b2511c115ebdbb1131eefc5685d5a2d64f3c6037ca7a0b1374a69afa
166 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam, indicated by heuristics flagging lottery/prize language combined with fund/parcel delivery requirements. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a mechanism for hosting malicious content or facilitating further phishing attempts. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6451

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092a2b53bc0a---70197705733.pdf In PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160b56f1d63773---6149788319.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/4guf38dh25f75fef2vmvtrod8q/32577728755.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/6vq7hnkg2d569rs587o19g7aj3/24333767950.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/fvdv80n0krfj9hgj607ma92t9c/4464462767.pdfIn PDF document text
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/3e5f0a273a0711feceb6a6f04bd40c30/jusiwupulesovodetanuv.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb6b8193fe---kotegejopute.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8d2b8e364---74062949138.pdfIn PDF document text
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/40857443467.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/l24l4lanou9efvurh2qg2j3e83/24571048221.pdfIn PDF document text
    • https://diaochue.vn/userfiles/file/liziv.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160785a8a80b2b---23987923028.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/d59fc8552dc2fc7796066dd4958843df/86514879417.pdfIn PDF document text
    • https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/65567254100.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/48dcd3066560febdeb1484ff05421da4/37304070473.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/96890b520dac7f4eee650227489d5626/malomasigufenivejidejaxu.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16095aaa19b5b3---dovabowazixuxuxoma.pdfIn PDF document text
    • http://plncse.hu/php_data/file/bekutosawodagukujuvenu.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/jorexowawuvadu.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b79b20b1c2---51738071299.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160787fedc25f4---88046705747.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=legalism+was+the+philosophy+of+the+state+underPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a3846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3846 2568 bytes
SHA-256: 1ccc5ddaee1f9a6bce145a7678c47f83e427a08db572e58f2abee9b4b51eafee
font_01_sfnt_off000a434d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA434D 19804 bytes
SHA-256: 404bed6167a976891af5df8b7454e25440144dc8f826215f206380bfc88e312f
font_02_sfnt_off000a74f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA74F5 11200 bytes
SHA-256: b639e30ac04661519029af8f4be00148602e047b265f79877ea78784aa13c7bb
font_03_sfnt_off000a8ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8EE2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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