Malicious PDF — malware analysis report

Static analysis result for SHA-256 9accd35844b4e3de…

MALICIOUS

PDF

134.1 KB Created: 2021-03-11 11:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b08d4b4cbdfcad71ec59793336abf7af SHA-1: 4d3b9d689b4c78252905fe10440b86dbe632934c SHA-256: 9accd35844b4e3de0aac2d8ed5340d06e66d8929247e9bc75b4fda55fc7648bf
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and it contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, contains text that appears to be a lure related to a PDF document. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/award?keyword=pasado+inmediato+alfonso+reyes+pdf PDF link annotation
    • https://salovunuwav.weebly.com/uploads/1/3/0/9/130969923/5347092.pdfIn PDF document text
    • https://redorofi.weebly.com/uploads/1/3/5/3/135383823/f7337d9e7cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376382/normal_5fcb66a73d982.pdfIn PDF document text
    • https://bolowarokarov.weebly.com/uploads/1/3/4/3/134349384/xajidut_gosir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369183/normal_5fe24ff5af80a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390681/normal_5ff388a560cf3.pdfIn PDF document text
    • https://balupelirotapos.weebly.com/uploads/1/3/2/6/132681476/sunifubero-nufawisepe-sikono-kegejekevafoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_6048250c73bb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406787/normal_6010fb78a8092.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473971/normal_5ff12e7a0f64b.pdfIn PDF document text
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/jesarofivo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://genenapukiral.epizy.com/prince_harry_wedding_dress_uniform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80262680-1067-453c-8fe5-5bbc881b564c/94788104049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c2e7bbb-66e8-4f59-b2f4-d4a93a5b3e37/pioneer_ddj_sx2_controller_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0893113-ba36-4755-98db-75e5b4071090/taylor_ice_cream_machine_for_sale_craigslist.pdfIn PDF document text
    • http://pelewonaxiguso.epizy.com/us_embassy_visa_application_form.pdfIn PDF document text
    • http://wutugegazebezop.rf.gd/telugu_bible_app_free.pdfIn PDF document text
    • http://xafofeb.epizy.com/newest_movies_hd_apk.pdfIn PDF document text
    • http://fapiruligifujo.epizy.com/who_goes_there_board_game_uk.pdfIn PDF document text
    • http://wuzazuj.rf.gd/lugake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab9e93ff-169d-4d65-a0c4-07e92f61b694/forex_fundamental_analysis_books.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_off0001c55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C55B 5076 bytes
SHA-256: e6bf30a66d4d3afdda9c233e84abf347e46f535d90049db208547a49a80468d1
font_01_sfnt_off0001d683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D683 11688 bytes
SHA-256: 8991178edcb7b9bf1e76198651009351196aa3118a8aac35b90a3d0f0664d374
font_02_sfnt_off0001fc62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC62 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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