Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e929a23bd3d1ff…

MALICIOUS

PDF

140.5 KB Created: 2020-11-14 15:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3db4020d3f1716448b9e39fd6bd42b55 SHA-1: 1aa2914880279cda4bcd5cf1aaa864798b08a367 SHA-256: e7e929a23bd3d1ff072e7e02faf0c1e43c4cc1218830cf0a8d51a5c62ca84a29
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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://traffnew.ru/strik?utm_term=maths+frameworking+3.3+answers+pdf
    • https://cdn-cms.f-static.net/uploads/4376404/normal_5fad407ee3c18.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/85785095-c1c2-47ba-b2b4-041ab1f15a1e/report_card_comments_for_impulsive_behavior.pdf
    • https://uploads.strikinglycdn.com/files/fd49357a-c923-49e5-9b03-6bf8471569c8/31155893678.pdf
    • https://uploads.strikinglycdn.com/files/a7056778-0b4a-4139-af1e-1f93587a3ccc/64742406764.pdf
    • https://uploads.strikinglycdn.com/files/d734a8e7-7db0-40c8-98ba-9fb750fd22ec/nazuxikelakazinejida.pdf
    • https://uploads.strikinglycdn.com/files/ac7b4316-34c7-4a07-8c95-791eb9995461/98924948058.pdf
    • https://s3.amazonaws.com/padadutiseni/logic_2020_grammy.pdf
    • https://s3.amazonaws.com/navoburarovada/free_movies_2019_app_apk.pdf
    • https://s3.amazonaws.com/zabevog/kozafalod.pdf
    • https://s3.amazonaws.com/wifozuxeku/mivanisavigotugaroxalok.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017a30.bin
07ce7e2605e80c9dd95e4bafebc93c827e5eb0f0469946f6f33fa6c6adc1c866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17A30 2252 bytes
font_01_sfnt_off00018444.bin
40e07dd2b04be2a69bf765580f297dd7df33e0ab669d6e528004505a9e7dce44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18444 25468 bytes
font_02_sfnt_off0001cd29.bin
49f12dc347f9d6d8c23e9bc6903015043f6649d00c901378cb97ba94fd4d5b36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CD29 5780 bytes
font_03_sfnt_off0001e0da.bin
5a686a05062cbd9a5e215b68ac1d1319f28f4842b42e0e84dd6e90dc14580f00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0DA 13060 bytes
font_04_sfnt_off00020d39.bin
159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20D39 16140 bytes

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