Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eefdd3060f87c2f…

MALICIOUS

PDF

76.9 KB Created: 2021-05-16 18:01:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 538a9c586df8d5c39c12ab06f8320d9d SHA-1: 2837418d50f2a8b012661757f1846ae356266099 SHA-256: 6eefdd3060f87c2f5b962c7bea8ff410fcaf06104f166ae16b32664567977f19
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are used in a link farm, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'game of thrones download filmyzilla', aligning with the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://gimoguvi.ru/strik?utm_term=game+of+thrones+download+filmyzilla PDF link annotation
    • http://getne.xyz/bootstrap_templates_ecommerce_freev6jt8.pdfIn PDF document text
    • http://sodahub.pro/mufipozumisazukawigepojco3te.pdfIn PDF document text
    • http://wumiwuzigimo.mywebcommunity.org/automata_theory_tutorials_point.pdfIn PDF document text
    • http://coolstudent.space/64734712999nux8t.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/fluval_306_not_primingm8l2j.pdfIn PDF document text
    • http://pedron.fun/parts_manual_case_504_enginew8stv.pdfIn PDF document text
    • http://xevijuwidenuxet.mypressonline.com/40360511234.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/antichrist_full_movie_480p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f96951c4-1c4e-44b2-a108-da983e804a15/thich_nhat_hanh_book_peace_is_every_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5bf80d6-3e32-4623-bfed-27e44b37b740/78323807347.pdfIn PDF document text
    • https://f4a80ce2-0a24-44e2-aff7-13c87a434ee9.filesusr.com/ugd/ace063_c7f9289ee720490cb712922540cc43bb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/best_price_on_minn_kota_terrova_80_us2_i-pilot.pdfIn PDF document text
    • https://ae26bae5-b1f3-4fb2-a0ba-5d2f2d23988c.filesusr.com/ugd/aec2ea_65bd39a2844042b4abb9a821c0f0f9ce.pdf?index=trueIn PDF document text
    • http://xojudemavu.onlinewebshop.net/psychology_book_class_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40f746e3-73b4-48d1-a190-3f5f66814201/55059457058.pdfIn PDF document text
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_6cc3b5339e46414c83ad3a69967384af.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7311bd61-217c-4ee4-ab71-8fe43f6ff6f3/what_is_leisure_time_passport.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/492e14f5-d04a-413e-94d4-1036952e4224/xefivepijirodexu.pdfIn PDF document text
    • http://xakagigoneliv.myartsonline.com/65636048163.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_off0000ebcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCC 5420 bytes
SHA-256: 7b55760a2fdfbf14ed478c6fbb519b454e07a6f3faad52fc568f78d55ff14493
font_01_sfnt_off0000fe32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE32 12080 bytes
SHA-256: 32b7e08998c260802cf0ec10619b73c86b068be18238468340bd13dacc48ea48

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