Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a262e869574df9a…

MALICIOUS

PDF

96.0 KB Created: 2021-09-02 19:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 90fabd6c458d4f5792cc17fe8fc9f9e0 SHA-1: 95e2c5c672d6a120bf57cd66481994c7bb1487ae SHA-256: 6a262e869574df9a3fdc537a7ff2d8a1335136a222bf97dc64c4b091ee134215
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.3383

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://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0d51ec76d---kanuxarepixobomom.pdf In PDF document text
    • http://asvpp.fr/pdf/6736900996.pdfIn PDF document text
    • https://vmgeducationtrust.org/home/vmgedu/public_html/public/userfiles/file/94453733762.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/jewebepawivuwelube.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a499f50db86---fenuvefinosew.pdfIn PDF document text
    • http://ihdbd.org/upload/files/bofanukeludanak.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/zivukuxifogufabefewo.pdfIn PDF document text
    • http://gartenbaukoeln.de/uploads/files/fixesataruv.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c984c78d78---xusinujagalabepiti.pdfIn PDF document text
    • https://dacinsara.ro/fckfiles/file/53634720769.pdfIn PDF document text
    • https://network-italia.it/file/44648597179.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/e31cb10b96ef0320e6b2dc34a7558626/wajinofimizesunitezubuva.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607afefd6d9ee---jaxawurit.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/21203062732.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16070f4873c490---93556298712.pdfIn PDF document text
    • http://cn-polylysine.com/d/files/tepupu.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea94bde493---kesegerusufo.pdfIn PDF document text
    • https://shibbirs.com/media/files/69147405641.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/40ca611e16edddd1ca25782db5158afe/75585897518.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c44b4c116d8---wosomi.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/a53e9df2e51fa0f94d228eac96cf7c76/zuliguferasuwapoj.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210705234542867583gkglex.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ed5e166b5---wogixifenatidiwuguromowi.pdfIn PDF document text
    • http://hermandadperdon.es/userfiles/file/36080260052.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=ultimate+jazz+fake+book+pdf+downloadPDF link annotation
    • 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_off000134d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134D4 19448 bytes
SHA-256: 151a37a5c4043d3ee45071ab221559c73cc6d04db8796f392bc4db3110d3cf56
font_01_sfnt_off00016821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16821 10904 bytes
SHA-256: 81442822e060aee3b4a6e27a4852c99d7a441b35ce5b486c88ac59360766e64d

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