Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeda35de08bffcce…

MALICIOUS

PDF

86.9 KB Created: 2021-02-18 12:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ba8cfd26d391f9945c48fe6889fc29ec SHA-1: 270bbda7879244bf9d5ea3681da041275110a8aa SHA-256: aeda35de08bffcceb44bab8666807b0b3e1225fc04c2ff39fcafdf469c032b0c
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or trojan payload. The embedded URL points to a suspicious domain, likely serving as a lure for the user to click and download further malicious content. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/strik?utm_term=critical+race+theory+kimberle+crenshaw PDF link annotation
    • https://cdn.sqhk.co/kewudomavave/j0Fhfib/folalokewitiw.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/dDER9id/video_maker_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/3FjcEhe/dibapur.pdfIn PDF document text
    • https://cdn.sqhk.co/mejabutumu/IhgdFgd/disorderly_conduct_illinois.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/hcgc5hj/why_does_word_crossy_keep_crashing.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/lgggjC9/38764610353.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/TijibpD/furabukukekolitibujofu.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/KNtifBn/23664178798.pdfIn PDF document text
    • https://cdn.sqhk.co/gogerazina/9gegghi/launch_monitor_for_sale_australia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nepupiborama.rf.gd/guided_meditation_script_deep_relaxation.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/arcgis_10._1_software_free_with_crack.pdfIn PDF document text
    • http://giratas.epizy.com/47703739633.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/antivirus_x_tablet_android_gratis.pdfIn PDF document text
    • http://vepejatudededok.rf.gd/intoxicao_por_benzodiazepinicos.pdfIn PDF document text
    • http://xidawowikobotof.rf.gd/refimazekup.pdfIn PDF document text
    • http://kewivifonawati.epizy.com/ku_course_transfer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/fikukudofu.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_off0001149f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149F 5344 bytes
SHA-256: 47a3bb01e75b765bf240b656c8034660cd3a433d583e9b086841806f68d6afb2
font_01_sfnt_off000126af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AF 12044 bytes
SHA-256: 782e2de3c24af1206a183f1f7d425d19fa747156cf8101eb38b54cdaf4c1ff43

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