Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a758bd7132ade35…

MALICIOUS

PDF

42.0 KB Created: 2021-06-25 22:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: 0a3f41cc9cd076d29f7af67cc71d3152 SHA-1: b5b7f21c8da1edba83fa1f12a958b58f5f913d87 SHA-256: 4a758bd7132ade3583de304607c9da9102341194447da29811064f031c75ccb7
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and 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 0.7020

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 41 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 https://cosplay-expo.it/ckfinder/userfiles/files/90918408274.pdf In PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/huvtd6k8rtqm5kg0jli42q9mai/boremegadedixijepiretik.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/89546062993.pdfIn PDF document text
    • http://silesiacapital.eu/data/file/nawewilojunolinukomoz.pdfIn PDF document text
    • http://sixtyguildersresearch.com/admin/photos/file/73229368724.pdfIn PDF document text
    • https://charlesstreetvideo.com/userfiles/file/64056017815.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd455d31b5---vikarivubidufune.pdfIn PDF document text
    • http://bhk-aindling.com/userfiles/files/19748571996.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/83434699529.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/fegemawivuxigexed.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/7933f4bd667fff2d7144ba010404d37e/81906462856.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/gllbbqspis29an95c3j58a0554/girenasurisebalozamoduvub.pdfIn PDF document text
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/fl44ilt5li9v29uj1a2jtd9tlk/1628420034.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eec6748634---bexasavubeguvinow.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/40a9b65a406aa7595f3f1b600f264ae5/80483354213.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/e14826117c4e089141663c645b42dd94/12274767379.pdfIn PDF document text
    • https://dubaimotorcycletours.com/uploaded_images/files/32220992307.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/fufibavexekelukivajuwedub.pdfIn PDF document text
    • http://dfwsedan.com/nbloom/fckuploads/file/37365566303.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091fb27b1ba1---65431362581.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/40fb2d6d503a4705c828ab908ee8c1d5/wojan.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbf0fc3804---bosezixozuv.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f8e920bf8---gibibefi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=german+short+stories+for+beginners+olly+richards+pdf+downloadPDF link annotation

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