Malicious PDF — malware analysis report

Static analysis result for SHA-256 db9581eead36f2c6…

MALICIOUS

PDF

200.4 KB Created: 2021-07-13 00:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: fa144322fb6718c298e84421e54d0fd8 SHA-1: bee590cd3a4cdc7b10a2e5064dcdd4c4a9c80984 SHA-256: db9581eead36f2c6e20f2eff0f4d898f4f23fa8130f85f861a81f45c9303a267
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan, indicating a phishing attempt. The PDF contains embedded URLs, suggesting it may be used to lure users to malicious websites. While no scripts were explicitly extracted, the nature of PDF malware often involves JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3273

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=before+anna+todd+pdf+online+free PDF link annotation
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecaa561996685841ac6774/1626122839086/how_long_does_it_take_to_get_tramadol_out_of_your_system.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7b0c380504e0a77670e4c/1625796803605/lady_and_the_tramp_new.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8bf1fa40056e74d31e70/1626115057820/98453552712.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002b84f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B84F 10376 bytes
SHA-256: d0a63c6fa434aa36e0bc96b4be1c30d41a0629e2f5dc12e4f43d8637043e7882
font_01_sfnt_off0002cfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFD5 17188 bytes
SHA-256: 4e37c351bad1d4a9d0907f2928e62acde9aeed4f390eedf73c76ba7b310e5513
font_02_sfnt_off0002fc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC2C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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