Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe0324a722907c4…

MALICIOUS

PDF

77.9 KB Created: 2021-07-17 12:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 29d2338dc519d3216b22b26ddb2b359f SHA-1: ae4c930a4738188693cf5eab728f50af6a6e0fa6 SHA-256: 9fe0324a722907c47d1e7a465c2ac4af35ddb4c6cb8121550e6cf8da173c8feb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely exploits a vulnerability to execute code. The presence of embedded URLs suggests a phishing or social engineering attempt to lure the user to malicious content or download further payloads. The document body is heavily obfuscated, preventing a clear understanding of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8827

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://feedproxy.google.com/~r/sq/ugae/~3/UZrB20b2Dcg/square?utm_term=different+types+of+process+in+thermodynamics
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f09ccd5ef09e75ee558472/1626381517750/onion_browser_online.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f2193b30be7f22063f6b41/1626478907984/how_to_draw_neo_traditional_tattoos.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ede75fd9d5ad70ebd35ae1/1626203999728/ms_project_tutorial_free_download.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e84404e3cefa6a229123e2/1625834500691/somugujesujo.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60efd65c365a201d3c37aff6/1626330716549/baregawo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0200216a6d35a11143dda/1626349570886/xeramexivuxobasip.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_off0000cc55.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC55 16792 bytes
font_01_sfnt_off0000e467.bin
cca95a74b1a620a0957a0aafd9599f7e4e93287ed193114fe1584f1d29aa0978
pdf-font-stream PDF embedded font (sfnt) at offset 0xE467 16900 bytes
font_02_sfnt_off00011080.bin
1c89c2aa7c528d3d2047bca316fdb42b0ba363f34933cd850ad9932d6ab0893b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11080 10956 bytes