Malicious PDF — malware analysis report

Static analysis result for SHA-256 1229ed046cd4be4d…

MALICIOUS

PDF

78.0 KB Created: 2021-08-02 19:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: d2ea1d3c840e08fa95abd41e402915ee SHA-1: fce2e0eb832f6409b7297ae87492c3efad62e3a2 SHA-256: 1229ed046cd4be4d775ca8be62e6b1592c7587a7c85dee990e59089146a6b98f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV, indicating it likely contains a phishing or trojan payload. The heuristics reveal it functions as a link farm, with numerous embedded URLs pointing to various domains, some of which appear to be compromised WordPress installations or disposable hosting. The primary purpose seems to be directing users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3524

Heuristics 5

  • 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
  • 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://irlanc.ru/uplcv?utm_term=celi+3+test+di+preparazione+chiavi PDF link annotation
    • https://youkuvpn.com/upload/files/ranurajofa.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/82b97c2134a9c0c8f0f2c6ef19e48476/47337667973.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/81702622926.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/83954154386.pdfIn PDF document text
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/673e13c5e7f2a0e09f61de7ff5bb2eb5/57114198725.pdfIn PDF document text
    • http://xnucleus.com/members//member_images/files/wivexedepuniboz.pdfIn PDF document text
    • http://studiozammuner.eu/userfiles/files/mupoxafoxevusopol.pdfIn PDF document text
    • http://studiogiovannone.com/userfiles/files/93892139973.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/2aa02c42b447ee4786d544402c5a278c/62929223020.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/2d3b40fdc99ff9b1027475b9627f07b5/dogimizit.pdfIn PDF document text
    • https://champion-osk.pl/userfiles/file/25103057407.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/6g0uh73ivdp34bvt308p86otc0/lajilatosax.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608edd49d2b91---93461270347.pdfIn PDF document text
    • http://kino-cosmik.ru/sadm_files/wovobafomeruf.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/rewironiruzupemasupupe.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/12422732250.pdfIn PDF document text
    • http://savitapiti.org/ckfinder/userfiles/files/71431095385.pdfIn PDF document text
    • http://indecomavo.pl/inc/xabozanifeba.pdfIn PDF document text
    • http://xiaohecollege.com/d/files/92518820729.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16088051119b17---munatolitefidedi.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/1v6jhrpkq794fbq3ho7r8l7ri1/wanodusuvevepanap.pdfIn PDF document text
    • http://lbtech.kr/upfile/files/pinasafifujukewefonoro.pdfIn PDF document text
    • http://ca1970.com/clients/10044/File/jisemazovetuguzezux.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/munuvobazorobuvususijo.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca362142cc---31267133123.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609825a63e256---90167976450.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD993 24328 bytes
SHA-256: 51b3e580addce959f36761ebd4696aefbf50a78e098de86d1e5f7daef840ea9c
font_01_sfnt_off00011600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11600 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1