Malicious PDF — malware analysis report

Static analysis result for SHA-256 700392229b45110c…

MALICIOUS

PDF

63.0 KB Created: 2021-07-14 00:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b7ba4ca18443944e6f4ac4167d54d5ae SHA-1: 954bd89fd16e3d4dd3eb4f11b517c93e13e4addf SHA-256: 700392229b45110c195a66300fd9a8da15070297e62abd8a6b88e2d0cff7732f
154 Risk Score

Malware Insights

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

This PDF file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites, likely intended to lure users into clicking malicious links. The presence of these links and the overall structure suggest an attempt to distribute further malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6677

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://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/a06dbcd20817653ad09c5a93772ec4cc/badugono.pdf In PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/0169d91f4b65334b9cabe25027d55343/fekoximagomimawu.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/ec5788ac0cbb858039237f71c4fb0849/12857025472.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3d5567dc3e3f5ae67b2394acbc237e9a/gulanabigunokovanejofume.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608fab569a7f3---50021965869.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e53687c5832---59420724797.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/77893786020.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/xanigovifuru.pdfIn PDF document text
    • https://fentesmakina.com/paket/upload/files/gubixiresagaxuka.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad49ee4651c---bukusal.pdfIn PDF document text
    • https://doanhnghiepvietnam.org/img_duhoc/files/70769360941.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/88327208913.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/cdc1001725bd34bcdae425879a681dab/63084587081.pdfIn PDF document text
    • https://okazionche.com/files/bupawadewem.pdfIn PDF document text
    • http://havefuntogether.com/image/upload/File/77823895635.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/nutaf.pdfIn PDF document text
    • https://biovuspharma.net/userfiles/files/rasokexudanajuvi.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/fuvo9ulopig1vbk9impa39n883/fafid.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/a1f068fc6a02e17c4e5ea5878e4a5a37/kimerepupole.pdfIn PDF document text
    • http://cintabogor.com/Uploads/userfiles/files/10376499216.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/file/14209961699.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e105f7ec2eb---75064205847.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160729c42e0369---sikaradukidodabapixerux.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608af4038892c---zojadijulenakogi.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/99210946548.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=chicago+electric+generator+66604+manualPDF 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_off0000e8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1