Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad45a66cc1784897…

MALICIOUS

PDF

92.9 KB Created: 2021-06-28 22:35:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 187acb8fe4fcf9a587150d41d8027d6d SHA-1: e09f18dabdfde22bfd2b8cd02da6bc699b0a7677 SHA-256: ad45a66cc17848979761130a09419abd3ea3b60c3d26cc340532a6d8805cf108
124 Risk Score

Malware Insights

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

This PDF file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable hosting. These links are likely intended to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4658

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 http://beachfirebrands.com/userfiles/file/72524006014.pdf In PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/3j9ptn4qi2ll9lr07s53gnu9c1/97186679152.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/orucl0fp58aocvld4q9ngjfp27/subamag.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/3eb9b6495138ee4e9f9df1602b416824/geguxizuzowironu.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/xitafave.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/rb8ifkglprv788cse8at8b5ah9/25083306018.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/8qtdib2ogm5ubq7b04sdit30e6/59873986392.pdfIn PDF document text
    • http://cukiernia-waltar.pl/qcms/userfiles/file/wazovefominexogawamevugus.pdfIn PDF document text
    • http://munnarinfo.in/userfiles/file/desogopisaxifojedum.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b80e05a224a---zotasevuludotokusikevawet.pdfIn PDF document text
    • http://eiak.org/upload/editor/files/49729893319.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tabetosavaforufugov.pdfIn PDF document text
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/tgaojiudkdst1je938ifcqcmfu/joxujadunajola.pdfIn PDF document text
    • http://wjvanderheidedienstverlening.nl/uploads/file/zifekurame.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/safopamikifetepibiruxova.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9802f0c7a---17555591217.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0e7c6b63f---48974307067.pdfIn PDF document text
    • https://stratasphere.online/userfiles/file/9405320545.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608be2a5a0d52---56246590409.pdfIn PDF document text
    • http://firstcuwire.com/file_media/file_image/file/xologen.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c26bae2b6f---nofazanajekeluwitit.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160736243b2dbc---wokoxoruponatake.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bff2e528cfb---vuludufoge.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/1b2c017e7de8894019777be9d2ddeb7a/51216069459.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/hlulpkq0b51q280dck92ovjmdf/penelapu.pdfIn PDF document text
    • http://diclenakliyat.com/userfiles/file/vivorevilupuzanidunofa.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/5d243vuopmks4gg8t5nqhkhcq2/nebaximut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=you+make+me+sick+to+my+stomachPDF 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_off00013616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13616 17200 bytes
SHA-256: 8c1df10a32efa1708834c4badb2e5e182482ed837c1286adb55481236d309ea8