Malicious PDF — malware analysis report

Static analysis result for SHA-256 07db55a2ada14bcd…

MALICIOUS

PDF

92.9 KB Created: 2021-07-19 19:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 392b96b4f37eac3c360c52c7d65b3c31 SHA-1: fe4d2f319f3ec207ae83bddfd08ea6eea33bad7a SHA-256: 07db55a2ada14bcddbba95ea47f7d9c2acd7463f38740beac3f8ba6ece64c0ed
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3920

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 http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/frm7vi3i979736c9jdshum7je1/73002817289.pdf In PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7efde683a2---25115165623.pdfIn PDF document text
    • http://castanienfamily.com/clients/74558/File/petimerule.pdfIn PDF document text
    • http://ipmarketing.net/userfiles/file/bawugesutikozesajefi.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d6520d389---nosaxizoregoluredogisito.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b542f86b46d---12174796931.pdfIn PDF document text
    • http://trineckevzdelavani.cz/webpagebuilder/ckfinder/userfiles/files/janudabubegomemales.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/fadidura.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/sojepuna.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/4430ea29fb4cfe12058c897f596d44db/juzulenanagezaduxuzo.pdfIn PDF document text
    • https://irisapp.cn/uploadfiles/fckeditor/20210616/file/16238398556406.pdfIn PDF document text
    • http://ciarajewellery.com/editor_upload/file/94176947386.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cc64f4c79ec245cf8780df4efc5b302a/99023964041.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/52920186778.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a09a679780a---gotakowadodubekofadowo.pdfIn PDF document text
    • https://italvaping.com/file/31875698414.pdfIn PDF document text
    • https://sonarmusic.hu/up_image/file/kapapevoronewomilomipanot.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/dded86acf38bf4669a985b7a7e7e60ad/9992870247.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/5514899182.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///2021621192361845.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f89bb5acce---68271562448.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16083d577acc1f---24193237272.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e8da771a9---66894864405.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad3c324cab2---jafovovijefimukuzunaxu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=symbolic+interactionist+perspectivePDF 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_off00011850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11850 16976 bytes
SHA-256: 04a35e90b8bcffa336fa51b6e2c1bcb67aa43e980e7f8a02dcdda3ede3bbfbab
font_01_sfnt_off00014472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14472 10932 bytes
SHA-256: 9ac392ba45309a0a1b8567210283159ce49e26a10129aadf11cfb9a691c56da5
font_02_sfnt_off00015d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D8F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1