Malicious PDF — malware analysis report

Static analysis result for SHA-256 174d1ca42cf99737…

MALICIOUS

PDF

39.5 KB Created: 2021-08-10 07:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: d12e3eba044c484344b6fb78bdc43b20 SHA-1: fed6556a0b76c3b5494f873f81b01158759a9def SHA-256: 174d1ca42cf99737cc676d43e5ecea3cd6b121369ed3ef72c925e4bdacd95047
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8821

Heuristics 5

  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://www.siphonicflowmandiri.com/upload/files/jokukigolomorubalaruzed.pdf In PDF document text
    • https://kiameds.com/images/upload/files/80688578728.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160888c028b3b7---xijazavopizavenurubobanu.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/ec25fb949ad18e400ee4b0426bc6a60b/nojozinesozitesowuje.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160741adbbc1f8---lujemap.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/7eacf31d8ce33d3dc27996cfe188fc09/feridisinoloxi.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/rafutigugadilugefov.pdfIn PDF document text
    • http://aifamilyreunion.com/clients/59202/File/62300735346.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/kirafasomubezizepi.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/r780f4d1fmu3s343hvp6asm0l3/kanidudezefetodom.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/68405601320.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e802b86a70---toxobawopolufukegoniz.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89976024503.pdfIn PDF document text
    • https://fallsplat.se/file/38361912982.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a452928eca---23805063575.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/bmp6rv1fsu4hkskbnh197ij333/56915604275.pdfIn PDF document text
    • http://czpohledavky.cz/userfiles/files/46066031221.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=libros+para+aprender+ingles+pdf+con+audioPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.