Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c018ce57448b39e…

MALICIOUS

PDF

74.7 KB Created: 2021-07-21 05:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 58f2863c7bf1e65d6f1936774282fae8 SHA-1: 6b104af681731e6f5ee105cd793e5b2b16f3425f SHA-256: 6c018ce57448b39e7ce5c1f343b9ca12e1c7882e279fb4aeb9bf26580ed16bee
154 Risk Score

Malware Insights

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

The PDF document contains a link farm directing users to multiple external URLs, some hosted on compromised WordPress sites. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. The primary goal appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5297

Heuristics 5

  • 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
  • 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://binarbaidservices.com/public_html/userfiles/file/pisedinoneru.pdf In PDF document text
    • https://migger.dk/userimages/file/43790046421.pdfIn PDF document text
    • http://thecobbfr.com/clients/4/43/4363d5a08aa72aedcf7f7d4dd0675897/File/19007343537.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/22114390483.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b4d482b4b6750bd5350249f073ac0b3d/gavadubapofeximugumer.pdfIn PDF document text
    • https://marblo.com/app/webroot/img/files/34134106890.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/91136905031.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16092089962039---bixeredoxuxegamegiwesezix.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/16097a6d7667d3---mivusanajukugowoxirezi.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/40d7fe325414d86db3e2972302379e1c/fazujerajinikegofomagi.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/ab69774a0b1bb12a5c807b341f43555a/jajunuwilokirisola.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/8ef3daddab31dcdd379ddf55991aad45/nuxamerevagijojapevetuvu.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094b89500120---lasarinasokupivimekabo.pdfIn PDF document text
    • http://studiopol.it/userfiles/files/damolojizigipisinan.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16073e46329c15---jomirobepebufazulodenuzo.pdfIn PDF document text
    • http://hotelborgodeipoeti.com/userfiles/files/junolupo.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/a770c2277e5eb83f00248ba936288855/vofat.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/j9fmp9b8oiqtp4ghjilqrpp93j/bizatokekosedatutege.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160afd33ca53cf---18152217099.pdfIn PDF document text
    • http://indago-rovigo.it/userfiles/files/pizokuzutoru.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210529015948.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/d48003o34ojubgfmumrbvf2vf3/mevodatexuxakoxufepor.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16086ee633b8df---63938506776.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=rufus+2.18+download+old+versionPDF link annotation
    • 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_off0000d2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2EA 16568 bytes
SHA-256: 722c6f1eecd2303df1ddda3b8d30c80a935353f32aee66b04af5b6598910ae19
font_01_sfnt_off0000fdc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC9 10992 bytes
SHA-256: b86123eed124d8631a5e8bc782e4dd244990d13cf7020d1b69b9b9ca699ba9a5
font_02_sfnt_off00011791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11791 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1