Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e806a3c69a2b86b…

MALICIOUS

PDF

90.8 KB Created: 2021-07-14 06:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2402f2e94be416a878653cda932d8f1e SHA-1: e482fe5de85e0d1ea4faf00619123c7171894200 SHA-256: 5e806a3c69a2b86b7e5af3d54b4ad980f7f588710a15291fb83242919b56f890
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for phishing purposes. Although no scripts were explicitly extracted, the nature of the detection and the embedded URLs point towards a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8343

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://feedproxy.google.com/~r/sq/ugae/~3/NsX9ihectO0/square?utm_term=ncert+solutions+for+class+12+chemistry+chapter+4+intext+questions
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecbc2b789c146518dfb80d/1626127403725/lawolesikoruxasogim.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e769e04e14410b5d33256d/1625778657083/23013754281.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edc7404ff81d3e28118497/1626195776195/imo_app_for_windows_10.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8311a1f8f93f64abb9de/1626112785190/hoover_steam_vac_manual_f5914.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e846ea8c2f7c35123777f1/1625835242935/united_airlines_carbon_offset.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e90046e6a58043b6902719/1625882695043/hold_u_down_mp3_download.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff0d.bin
1ce26e18d42f5dfb9ef3ec9429745731bc353873c6ec8534053644923bed3416		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0D 17052 bytes
font_01_sfnt_off00012b81.bin
048d1f6e4a85c2f6aa11e047eb0236e524f39a7ec73d76f86287af6379f2bd54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B81 11436 bytes
font_02_sfnt_off00014689.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14689 16792 bytes

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