Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf9c556b3b378f8…

MALICIOUS

PDF

84.4 KB Created: 2021-06-06 21:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b843a02e8133a0b9285ca758f86614a8 SHA-1: 6118e2bf48bd45514b5a43a4a6d50b34143a5b6f SHA-256: fbf9c556b3b378f85eb13548b0ffc2a5f574606dc7a1647a3475b24cea8bb430
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://inwebjor.ru/pbw?utm_term=como+posso+aprender+a+investir+em+a%25C3%25A7%25C3%25B5es PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4463286/normal_60b3c9e3a66e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487184/normal_601f3b53c3c06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470703/normal_605da6aca78d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5fd89eaf5e606.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424025/normal_6003a555611fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419211/normal_606cef1fc9bdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383156/normal_6024ccd8142c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463809/normal_6031872ab49ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420587/normal_604e196ec3c84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368782/normal_5fc7f98823b67.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jilawuxifi.pbworks.com/f/jamixididit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3837c9eb-78de-428d-b192-73172dd866dd/retedetupuvubagup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eb2dba2-96d4-4e54-8d99-f7ae19f07783/how_many_carbs_in_a_bunless_whopper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be4e19c0-2e3a-4028-8dc1-242538eeacbb/ridgid_table_saw_r4512_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eb4ac0f-ab7d-4650-a0ec-7a5c1feccb15/descargar_geometry_dash_2.1_para_pc_gratis_con_todo_desbloqueado.pdfIn PDF document text
    • http://dejulagimu.pbworks.com/w/file/fetch/144546000/13305140113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15e967ad-e8a9-4027-9c62-4fd8aac9830c/24898232625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af19c0b-362a-475b-b9c3-2ee61e9ad592/is_baldurs_gate_multiplayer_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d9e628-0a88-452c-adf5-c1b71a558933/metujoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6c020dc-5484-4287-961b-c17d377f4349/jawifidazutasuziluna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2aa4c73-97a4-490a-a8c1-929529e6dbb3/how_to_replace_cord_on_hoover_windtunnel_vacuum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/071157a8-605e-4c4d-8de3-982a1ee90fab/wikepijibikukudov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94c9934b-0846-47b7-b336-36de9ac02233/bafasadufogabejet.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_off00010894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10894 5440 bytes
SHA-256: 565ce3f2157bcaa803f0471c2e89d9c1c65006fa8bcf578d65cba45d5066e9df
font_01_sfnt_off00011ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB8 12656 bytes
SHA-256: 6db32e7e8633b2e2717114cd7b4dd63c350fa97dccdbf0270110e56dca5a0c64

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