Malicious PDF — malware analysis report

Static analysis result for SHA-256 038fef517e7b0662…

MALICIOUS

PDF

63.4 KB Created: 2021-02-16 14:24:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2fcb78d4c2f74c5287ab76915e565037 SHA-1: 8c874fef7aabd4c83e05e09f5e213d018c63086c SHA-256: 038fef517e7b066224922eda0035fc6c0ef581d3d9ab47c92f03165c8a52b4aa
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to 'Where's Waldo' and the authoring application, suggesting a lure to disguise malicious intent.

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://baarspo.ru/strik?utm_term=where%2527s+waldo+free+online+game PDF link annotation
    • http://lnstgramhelpcopyright.com/muy_interesante_mitos_y_leyendas_volumen_3jx2lo.pdfIn PDF document text
    • https://cdn.sqhk.co/xoraxuvonaf/cwNWIih/blackbird_fly_lyrics_chords.pdfIn PDF document text
    • https://muxiduxipa.weebly.com/uploads/1/3/5/3/135319221/8861132.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415537/normal_5ffa878ceeded.pdfIn PDF document text
    • https://natitapa.weebly.com/uploads/1/3/1/3/131379406/9673115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412773/normal_6027a8743f9e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390068/normal_5ff41394d410c.pdfIn PDF document text
    • https://lurakowufo.weebly.com/uploads/1/3/4/4/134457973/9061210.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/Bgfjihh/euro_car_simulator_2_apk.pdfIn PDF document text
    • http://rm-swis-mine.com/bruce_lee_video_freebw3y1.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/iihiiif/moon_hopper_jetpack_surf_run_out.pdfIn PDF document text
    • http://callup.today/origami_owl_braceleta8883.pdfIn PDF document text
    • https://cdn.sqhk.co/jekidase/3EbWaHA/45479456794.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/wukara/duwunamemovoja.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/cognos_report_testing_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/11551233978.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/94869769132.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_off0000bc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC1E 5460 bytes
SHA-256: c581f39db2c2abc3d409f7cfcb11e57e113bffb170654c6eeccfb8af161a801f
font_01_sfnt_off0000cea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA4 10008 bytes
SHA-256: 32de17263f163f0517731d6c30d438bda0a7b0605cfb13640f57456addaaaf17

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