Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2aa00222cdac2a…

MALICIOUS

PDF

97.6 KB Created: 2021-06-08 03:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d187f3117aa0889859be6e9ab8ff6acb SHA-1: 90875f20d23d42543ae80e6f66fff4328894b669 SHA-256: 6e2aa00222cdac2a915d92954c3fe20daa453fc26a74c2bb8f2ce1ac53577904
186 Risk Score

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://pixomot.ru/pbw?utm_term=hamilton+beach+flexbrew+manual+49968 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422161/normal_6061fb65918c5.pdfIn PDF document text
    • https://sexaximelukifa.weebly.com/uploads/1/3/1/0/131069869/9522302.pdfIn PDF document text
    • https://japapetokanov.weebly.com/uploads/1/3/1/4/131454126/sumunubenalodevevova.pdfIn PDF document text
    • https://suranekiwexem.weebly.com/uploads/1/3/4/6/134698667/5825556.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469126/normal_6006dd38d7738.pdfIn PDF document text
    • https://mabaxezo.weebly.com/uploads/1/3/4/7/134766945/fezes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422168/normal_6018785d488ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470699/normal_6044d7859838e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469837/normal_5fe939d4094c8.pdfIn PDF document text
    • https://vogemafebin.weebly.com/uploads/1/3/4/2/134235603/6241042.pdfIn PDF document text
    • https://gazuxupoje.weebly.com/uploads/1/3/4/1/134108966/6b534.pdfIn PDF document text
    • https://pizojiri.weebly.com/uploads/1/3/4/6/134651663/dugof-xafebul-duwow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_6025882123639.pdfIn PDF document text
    • https://lidugozomamaxo.weebly.com/uploads/1/3/1/6/131606349/e9b68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411686/normal_5ff4c814d7cfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455884/normal_600f5bef7d58f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_606600c881b3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_60446c5a3e500.pdfIn PDF document text
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/18f603b.pdfIn PDF document text
    • https://funovupudejo.weebly.com/uploads/1/3/4/4/134473131/56ec3f54.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/be72c01f-6bf1-47c9-8120-90f62b1a8a1d/52002563142.pdfIn PDF document text
    • http://lugozamuxika.pbworks.com/f/pssa_training_quiz_answers.pdfIn PDF document text
    • http://joraxakegeg.pbworks.com/f/44693076956.pdfIn PDF document text
    • http://xesimisejek.pbworks.com/w/file/fetch/144583935/lakshmi_baramma_colours_kannada_voot_download.pdfIn PDF document text
    • http://nusuwoxub.pbworks.com/w/file/fetch/144416649/75532540809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7423ac14-4bc7-49bb-bcd8-88dd457ab402/american_buffalo_or_bison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a18446-8131-4f11-ac4c-b15d60267f79/97867679519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c08d7234-178c-4616-b94b-ae4adb13f6d8/dicionrio_de_acordes_completo_violo.pdfIn PDF document text
    • http://wuxikadafi.pbworks.com/f/mujhse_dosti_karoge_full_movie_with_malay_subtitles_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93c0cae7-cd13-41f2-bc62-6fb31d36a7da/free_alternatives_to_premiere.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001373e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1373E 5796 bytes
SHA-256: 920642867554eb8d5d51ec569874514e19c93ebf051faa6e7f7e478456d71fc1
font_01_sfnt_off00014ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AE7 13960 bytes
SHA-256: c0f673665bbd8823411d3c1372416a7c32d59501743e2a54a9e1f142525e9302