Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fd7fde007cf372…

MALICIOUS

PDF

66.8 KB Created: 2021-06-26 23:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 7f2747e94c39dbdfa1be9969fb8c64d5 SHA-1: 1771c8599a0ac838bae96a3184b1e70c8985cc7c SHA-256: 65fd7fde007cf372649a6e80b3cfcb36e5276ad54b230df710b46265918ef3e6
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories. These links likely serve as a distribution point for phishing content or further malware. The presence of multiple compromised CMS upload links suggests a coordinated effort to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6960

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://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/b2cedfd7760c16a7fe257510c2fbf58e/sigusukodamonopetixanoto.pdf In PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/2ebcc94bfa31eb726bc33528022478c8/16495349319.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd42f6a48c---bidaputixemoliserewa.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/f7c1ec49c4dc46cf0f9117b006ede489/sogutefudewij.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/4cf5885e38ba8bdefbbffb61870a5a0b/63434466403.pdfIn PDF document text
    • http://goodtraefarm.com/ckupload/files/72020308440.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607da4f8e6192---48113785686.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/47937606430.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/2e41806c7c350451c01e63b1cbcd2e49/10701938092.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210510055022.pdfIn PDF document text
    • http://k1a.ru/images/files/file/jiwisigikodatoruj.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bac5d8181ef---91456778888.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16090e91af2bd2---gifixivimokifotip.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/aaac012fafa6e76197038a93d861dabe/7714266041.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/kghudhnhe6ugbr39akjif5evk3/19526697183.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d212275d11b3676926ad73559257a615/99627098594.pdfIn PDF document text
    • http://artside.org/data/temp/file/zevowifodubukosazumaxopem.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/14474996287.pdfIn PDF document text
    • http://gramercygrand.ru/files/file/33262170410.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/0dh5u1uol3bkrcaj5inl86daen/perewaxatelevudejelofeso.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8c9fe3113---nawomegibapepawumov.pdfIn PDF document text
    • http://comlark.ru/userfiles/files/58720866274.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083eebeb1b22---29977635077.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=can+you+ovulate+a+day+after+your+periodPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF274 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1