Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2718d47e97a126b…

MALICIOUS

PDF

74.4 KB Created: 2021-02-22 14:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 534ce25c5b52239f1f0837271e380816 SHA-1: 2b3711918cbc6d6f1985d1cf01efac12b8b4e8a1 SHA-256: b2718d47e97a126b5268b8d846d4a4e3b7908f1ac7c899b9b35511d028ed3501
96 Risk Score

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 0.9998

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/wix?keyword=kil%25C3%25B3metros+a+millas+por+hora PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5fdb29105cb52.pdfIn PDF document text
    • http://sinasasi.22web.org/rikodurepudufopumoburuwor.pdfIn PDF document text
    • http://dubapevokitux.22web.org/zilesebajijivuperag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377401/normal_6005b231b2381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389601/normal_5fd6a75c77e10.pdfIn PDF document text
    • http://rirenanevigi.22web.org/bumuxutavegirebaraxikotuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453142/normal_5fe7bc90b7d31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466664/normal_5fdc8b901a16b.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/vonutavekip/39335430394.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/jamenaxoxuwufav.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/app_connect_vw_android_auto.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/brescia_stadium_guide.pdfIn PDF document text
    • http://bifapekedareb.rf.gd/lodofiwib.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/41403369423.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/seenaa_qubee_afaan_oromoo.pdfIn PDF document text
    • http://tudalumovadir.epizy.com/61292053365.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/how_to_calculate_gdp_per_capita_formula.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_off0000dca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA2 5164 bytes
SHA-256: 3717ea77fac9a131e2be4fc2cf2ee3ccc4438a49826cd723391e6590679610cc
font_01_sfnt_off0000edba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBA 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000f648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF648 10956 bytes
SHA-256: 643c85a98dc8b560802e0c1a6a4a5c11f5598bf2cde45c8c6e3c42de1c6c8dfa