Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee7600f800c97ae…

MALICIOUS

PDF

80.5 KB Created: 2021-07-18 12:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 37117facb7546d49fd22bdf1e97b10e3 SHA-1: a76dcaf372c93b56b5cca29a12f3bcedd42e018e SHA-256: 8ee7600f800c97aeb7df03aad03560e8023b71cac3502d428fcee8590af2a9f5
104 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a visual download button lure suggests the document is designed to trick the user into downloading a secondary payload. While several URLs were extracted, they are marked as confirmed benign, suggesting the primary malicious functionality is not directly linked to these specific links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/eaN1Eb74jJI/square?utm_term=recovery+mode+locked+mac
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3d89f50974615f927a0ee/1626593439271/biblical_meaning_of_1010.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f36fd304a1d970179d3fb1/1626566611491/planes_of_existence.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e811dd5eabb22f35dcc96b/1625821661119/camera_on_omegle_not_working.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f03fdc24fa75375d8893c1/1626357724240/7_day_gm_diet_plan_for_weight_loss.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0480ffc6647025a3b768b/1626359823902/33480114310.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e845ad8d23a90293b1833c/1625834925660/rozodawomusuzefuvigus.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8e78caa30721e65ec0ed7/1625876364550/fowegajexusositetowakodod.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edc6ca4c056a31b818bda7/1626195658845/18166458417.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f3c4496d5e991e36e4f972/1626588233469/the_rise_of_nine_read_online.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_off0000dba0.bin
e01dcec26e26ed7aced3993cac06dd08685b4ce1c27b001f2e603eaaa65e1e91		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA0 10388 bytes
font_01_sfnt_off0000f32e.bin
1056ee7420d9a61c9645cc0f95d2b5525fb56d8c81a3695b8d5303155a7538f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF32E 16460 bytes
font_02_sfnt_off00011df3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF3 16792 bytes

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