Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d7db3132f23c39…

MALICIOUS

PDF

76.2 KB Created: 2021-03-12 16:12:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ad1e8208c781a1d0e5e2ef8899aeedd2 SHA-1: a69c97e0f72ea9db63ce75e1b2d15889ae2b4bd8 SHA-256: f2d7db3132f23c39a04f28cb0c6558e061f468568444659bdea95a5da12b22e0
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://soxebez.ru/award?keyword=compound+shapes+perimeter+worksheet+pdf', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to 'compound shapes perimeter worksheet pdf'. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/award?keyword=compound+shapes+perimeter+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384472/normal_5fe95508a647f.pdfIn PDF document text
    • https://cdn.sqhk.co/zepagaro/I5hdQie/beko_cda563fw_fridge_freezer_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/WiXhfJF/43211548801.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/11335728943.pdfIn PDF document text
    • https://pidoruna.weebly.com/uploads/1/3/5/9/135966994/9966215.pdfIn PDF document text
    • http://gowanenutik.mypressonline.com/importance_of_capacity_building_training.pdfIn PDF document text
    • http://zoxuruje.sportsontheweb.net/wumula.pdfIn PDF document text
    • https://guvolobojifo.weebly.com/uploads/1/3/4/7/134733869/gakuwidafime-mebugip-nurutekamuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445880/normal_5fdaf938bb6f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420018/normal_6034e10875da6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_603487cb25a43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370791/normal_5fce2b09dfbfb.pdfIn PDF document text
    • https://pigiburoletu.weebly.com/uploads/1/3/2/6/132695467/filek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484143/normal_6039b488be3fc.pdfIn PDF document text
    • http://nipijapogila.sportsontheweb.net/bordereau_de_paiement_cnss_et_amo._maroc.pdfIn PDF document text
    • https://cdn.sqhk.co/defegitip/jbeicjb/91614758752.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/zolerazowubow/appearance_adjectives.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/tixumewux.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/countdown_timer_html_template_free.pdfIn PDF document text
    • http://sijadogif.atwebpages.com/44273233573.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/ringtone_punjabi_song_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/how_to_repair_shark_rotator_hose.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_off0000eea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA2 5308 bytes
SHA-256: 541213f50f640d626c47323f4b3913039663f3dd191cc451babcd7d456cfc271
font_01_sfnt_off00010090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10090 10208 bytes
SHA-256: cf190000f5dee7534a5e70248f695d31afae6c72b9b88f07530bc39ce8bdf521

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