Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fbc9884d792fbd…

MALICIOUS

PDF

72.4 KB Created: 2021-08-19 09:34:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1c1401db25ed287a4f4038a7d84ac83c SHA-1: eb342ac0c36c0a1311d6c13daaf8a9e598599f2d SHA-256: 07fbc9884d792fbd7f5122848de3d9cb19f46d8ac2697ac7a032f40019469fd7
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These links likely serve as a distribution mechanism for phishing content or further malware. The PDF's structure and the nature of the embedded links strongly suggest a malicious intent to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.1256

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://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d271f0296c---jirosimozatikebixisefele.pdf
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079e0e113f2b---kumab.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/434dd44bb9099f64aa8f520adebd38b0/dizabokuxuxutosomikeruzeb.pdf
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a56d330cf2---purixibixinodowavolu.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160876211924c2---jobigukalajexakenudasa.pdf
    • http://geometrarontani.it/userfiles/files/92877722843.pdf
    • http://naturallabs.fr/userfiles/file/95679374859.pdf
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5322b852b66fa1b608f3ab45e9bd09d2/tozefijowiradanixudaruta.pdf
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/967f675cd19e8de595ae9f8c7c25b807/4623390228.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/t3mtc1065jmnki0059ptpv7pvk/78596572654.pdf
    • https://caribemed.com/userfiles/file/junokeno.pdf
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ffc564cb823---xidumisulesaz.pdf
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607296e11ae04---42706117460.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/038dbd86ab3894729ea30bb4d85c3973/1882288983.pdf
    • https://asset-books.com/userfiles/file/verakib.pdf
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6fd023188---71921594360.pdf
    • https://fallsplat.se/file/88509308351.pdf
    • http://edgecs.net/documents/mitajamewonapijefoton.pdf
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3ddc07ea1---fegizifoxosapagukigilup.pdf
    • https://didacostruzioni.it/userfiles/file/84511865385.pdf
    • https://golf-tout-terrain.com/publish/page/file/28824367290.pdf
    • http://vinhthuan.asia/upload/files/95915680121.pdf
    • http://bscartridge.com/pic/52339408489.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=marriage+biodata+tamil+word+format+doc+free+download
    • 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_off0000c26b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC26B 16792 bytes
font_01_sfnt_off0000da7d.bin
e28b593e61d31c3db8226ee47a648bbbc7271b85beb4f55ef594990fd42f1bba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7D 16068 bytes
font_02_sfnt_off00010414.bin
01581fee2cbd72ac4a160a28e8c5122fb7973f53ffa48fe9dedf114a7c79ce2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10414 10872 bytes

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