Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd789bf608a621a…

MALICIOUS

PDF

85.6 KB Created: 2021-03-19 02:25:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bcbf93005a4295444f4c2304fdf3a1bb SHA-1: 69a1ed93c2314a5fb6aef40abbb6f7a4d05354f2 SHA-256: 0bd789bf608a621a06c7d366d89e3fcd12a18d31b7f1b03401311cfc97efa1d1
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/award?keyword=amarakosha+slokas+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411918/normal_5fcd42e5cf1c2.pdfIn PDF document text
    • http://mebovaduzi.mywebcommunity.org/central_telefonica_panasonic_kx_tes824.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/boburajanukexim.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/ncert_maths_book_class_8_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471710/normal_601ffdbbd7bdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459628/normal_6053d77143510.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479905/normal_5fc9d6c84ec1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402280/normal_604496d9808e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453900/normal_60141b25a0032.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69755dc-367c-458e-b49f-63a6de384e84/xadafode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a736aa6-9b27-431c-848a-fcce9bac7c4a/fekojedafokowaxub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa52022-ab0a-4ffa-abfa-8ea862369f47/autocad_civil_3d_rotate_view_model_space.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb049180-9b5e-4fd4-84c0-8ddd2aa27e2d/how_does_society_influence_behavior.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/384a1485-0a43-46b8-b60b-eb04e3959ad0/what_are_the_12_types_of_tenses_with_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/chief_keef_album_finally_rich.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7524cf3e-0817-42d9-bd80-bd2e70aa4e9e/yamaha_dgx_660_lp7_bundle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1505115-240e-48c3-a549-3a39cb675874/87769207242.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/mugafovixanujavewalopi.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/ancient_egypt_eye_symbol_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a06c734-748e-4612-bfb7-d29411d26a3f/konosuba_light_novel_volume_11_summary.pdfIn PDF document text
    • http://rovizomaguwex.atwebpages.com/cbse_basic_maths_syllabus_for_class_10.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/adding_and_subtracting_decimals_games.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B0 5336 bytes
SHA-256: 4a1a4891669326d648f2ae78c5fcbfaab2ca053c8a08c7e443d76beb68e65231
font_01_sfnt_off000102ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AD 12428 bytes
SHA-256: 529995dbd9a20097a269f808931bd496e66dbf10d08ffa90e9f844a998f0ed8b
font_02_sfnt_off000129ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EA 9344 bytes
SHA-256: 9a3ceabe26403c57a6fb42543ec4f33bc9d70c6b5eac2de1e53d22c2edb1a6aa