Malicious PDF — malware analysis report

Static analysis result for SHA-256 db425b932f5121c0…

MALICIOUS

PDF

75.9 KB Created: 2021-04-03 13:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f30d86b773f96ea107a1ea4a91fb39bc SHA-1: 2202159f07ff773d0f2cca159117befb6dafb0f5 SHA-256: db425b932f5121c0b5f7018c0857209a93a08a99cc0a2c5228e0390796697f73
96 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 URL, which is also referenced in the document body as a search result. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the nature of the content suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/award?keyword=cricket+batting+tips+in+urdu+pdf
    • https://cdn-cms.f-static.net/uploads/4387241/normal_602bf70ae7fc9.pdf
    • https://cdn-cms.f-static.net/uploads/4464313/normal_60161d22780cc.pdf
    • https://cdn.sqhk.co/gogoturowib/IMgeFAm/44318479876.pdf
    • https://cdn-cms.f-static.net/uploads/4404310/normal_60492b522c31a.pdf
    • https://cdn-cms.f-static.net/uploads/4475727/normal_603db06c1cb68.pdf
    • https://static.s123-cdn-static.com/uploads/4443617/normal_60048f09c6fb0.pdf
    • https://cdn-cms.f-static.net/uploads/4453741/normal_5fd682a4ee1b4.pdf
    • https://cdn-cms.f-static.net/uploads/4445750/normal_605fb6a29943e.pdf
    • https://cdn.sqhk.co/madumubo/KiDidze/talk_home_international_calling_card_number.pdf
    • https://cdn.sqhk.co/fotutubujuf/vhcbtjB/44919322216.pdf
    • https://static.s123-cdn-static.com/uploads/4502436/normal_5feb184d9b654.pdf
    • http://ruwaxidalemib.iblogger.org/4175481675.pdf
    • https://static.s123-cdn-static.com/uploads/4368471/normal_5fc5b6130dc63.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jifunujori.rf.gd/34362511155.pdf
    • http://pogosib.epizy.com/4736617800.pdf
    • https://s3.amazonaws.com/wujixus/the_laramie_project_cast_list.pdf
    • http://suludowoseti.epizy.com/ielts_writing_task_1_band_9_pie_chart.pdf
    • http://zewebuguv.epizy.com/17858918622.pdf
    • https://s3.amazonaws.com/godewumazek/intel_g33_g31_express_chipset_family_specs.pdf
    • https://s3.amazonaws.com/loranoduzuja/dorutabodikovolodad.pdf
    • https://s3.amazonaws.com/desenaz/creeper_world_3_arca_guide.pdf
    • https://s3.amazonaws.com/xamapebonijos/86004711078.pdf
    • https://s3.amazonaws.com/dudurat/tubefowom.pdf
    • https://s3.amazonaws.com/dudigonifu/junoposobelarelinuxuj.pdf
    • https://s3.amazonaws.com/vezumobigodub/degrees_of_comparison_worksheet_grade_3.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebfa.bin
70b320746d6fd0097ed084cb390728a64d3fa95d27a150fbffaccaac24cbea56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFA 5400 bytes
font_01_sfnt_off0000fe63.bin
6b4ef233877e13a1bf973c558d2a940855a3f8c837f93c6bfee0a1af3e247f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE63 10444 bytes

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