Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95d06a23503922e…

MALICIOUS

PDF

77.6 KB Created: 2021-07-17 06:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ae2c71fb5ea4e94f2dbc0c3a240bc71e SHA-1: 423501be24425b7fb2521c34b2dcc63930a68417 SHA-256: d95d06a23503922e700f35bb970ea54cae6585b12e72557021785fb0a7645e3c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, suggesting it may be used for phishing or to redirect users to malicious sites. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

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/AnJPYMJXbyQ/square?utm_term=recovery+from+tonsil+and+adenoid+removal
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee1a420981f365859f7c64/1626217026184/29926707342.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec8708de8c3264fe5f4dc1/1626113800289/zulekilizibit.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f207eb95bdf8785a4fe6f7/1626474475629/word_to_add_on_for_ms_office_2007.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f22f4a36db646251943c47/1626484555080/jpeg_viewer_for_pc.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0895457e17502ba7a756d/1626376533097/prayer_before_dying.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edc3f9537dfa200401e851/1626194938024/55467125419.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edeecaba7c7f743c1ef245/1626205899133/cure_moderate_wounds_3.5.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_off0000cd68.bin
d1c6ed5101b11de972463205527c48f1c18598cf085a2dd330509e666e5631d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD68 16852 bytes
font_01_sfnt_off0000f907.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF907 16792 bytes
font_02_sfnt_off0001111e.bin
c13bbaa65ff85eb94351cfa55eaf8e22479107db5dd921199488891e2afef5c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1111E 10864 bytes

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