Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0031708e4d8745…

MALICIOUS

PDF

73.0 KB Created: 2020-12-22 23:58:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbec1145fd76d2d5c201e8f3b5f94304 SHA-1: 71fbbc67fb4b6a79c48ed4922ff968f6fb1c598f SHA-256: 3e0031708e4d8745747ad7c1bb058278c8a39598271ab44a56b792a2ee92dcdc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site. The document body, though heavily obfuscated, appears to reference 'War of the Worlds' and 'wkhtmltopdf', suggesting a lure to a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojan payload delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=war+of+the+worlds+fox+review+cast
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/725891.pdf
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/moregusixedo_disawid_lowunezorosi.pdf
    • https://gutomaxitokivi.weebly.com/uploads/1/3/1/3/131383747/9015140.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/goviwigax/hosanna_hillsong_music_sheet.pdf
    • https://uploads.strikinglycdn.com/files/868ff68b-681d-4cf9-87ac-8cd78bf1f2f7/visitilumedej.pdf
    • https://uploads.strikinglycdn.com/files/a30a298b-d454-4ff1-8775-b34960882bc5/wejizanagag.pdf
    • https://s3.amazonaws.com/fekaduvopigab/87018887949.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd072cdae50a014588a89d/1606223661064/wabunefezogazejoxexis.pdf
    • https://static1.squarespace.com/static/5fc0fe386b97992eb55c938e/t/5fc5921fcb3e0f57710ed78c/1606783521177/taxufuliwavokexifij.pdf
    • https://s3.amazonaws.com/lixuzo/55483832922.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_off0000dee8.bin
cbd38493339c6458d3f549ccaf437ee25312ce58c9e0e45bb30a8a1d2965d94f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE8 5340 bytes
font_01_sfnt_off0000f131.bin
8c434280571e64c80293f2bb2e865033ca02b806945278c9a64d13b31d86d227		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF131 11728 bytes

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