Malicious PDF — malware analysis report

Static analysis result for SHA-256 50cb5d574061550d…

MALICIOUS

PDF

105.2 KB Created: 2020-12-20 09:04:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5be130a0061473056808a4607d0c27a1 SHA-1: d4acd322bd0eb031c1d050b4c144872f9422b1c1 SHA-256: 50cb5d574061550d4b54645f0f87083f64c0e640b129cad0cc5335c6dd64e90d
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'AA meetings phoenix saturday'. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/strik?utm_term=aa+meetings+phoenix+saturday
    • https://static.s123-cdn-static.com/uploads/4406482/normal_5fcd3957635a4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kakef/dufowubewinewavutiwole.pdf
    • https://s3.amazonaws.com/kukupunopedon/performance_appraisal_phrases_on_leadership.pdf
    • https://s3.amazonaws.com/poguvelefa/alquran_apk_offline.pdf
    • https://static1.squarespace.com/static/5fc365ff104edf1d7790e6f0/t/5fcb8c5a190ee82df8de8dca/1607175260190/woodwork_projects_for_high_school_students.pdf
    • https://uploads.strikinglycdn.com/files/3e83d0bf-cb73-41c6-ab2a-44124d849e21/62101569124.pdf
    • https://uploads.strikinglycdn.com/files/845a71c5-be88-4f3d-bfa2-af5c2999c49c/100_percent_free_ringtones.pdf
    • https://s3.amazonaws.com/mukutud/biotechnology_park_in_africa_report.pdf
    • https://uploads.strikinglycdn.com/files/28c90916-9d44-4752-b0cb-509200ac7b02/raramuwekexun.pdf
    • https://s3.amazonaws.com/levovod/15224251160.pdf
    • https://uploads.strikinglycdn.com/files/e5177177-5126-4e7f-b7e3-6fd312875d5e/the_studying_hours.pdf
    • https://uploads.strikinglycdn.com/files/13f9f5ba-7f95-4ad5-b09c-ec0c82e5b024/sazabo.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf6331491241adc4506cf/1606219316334/89185993516.pdf
    • https://s3.amazonaws.com/wofaxil/xebumisakiseju.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013290.bin
a88a5fbf2f8acd02a7df7e627d8fd5b821bd5218d2513fdcf0c169bf597ecd06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13290 9228 bytes
font_01_sfnt_off0001502a.bin
6ca48a954a21c95d777fe3e6146ba59386ab9b85de6cf6a8dfbc9cce59264fb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1502A 5380 bytes
font_02_sfnt_off0001624a.bin
8561e4a808a7db1e9f757933736d29bbc91932fa2e2c1a2c2983c18165586411		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1624A 11440 bytes
font_03_sfnt_off00018948.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18948 4324 bytes

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