Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8d5dc8ca90eefc…

MALICIOUS

PDF

85.1 KB Created: 2021-07-19 17:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9776c76a93c3d6cc6c707e888511fa68 SHA-1: 15d4e7098b5adf837a56a7b59fa979d05ea80672 SHA-256: 9a8d5dc8ca90eefcd8c40f31e285a1e25cd215d0ce347fed0cf86148c233233f
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it is likely a phishing or social engineering lure. The presence of embedded URLs suggests an attempt to redirect the user to malicious content or download further payloads. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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/y83TWYo-3DA/square?utm_term=estimated+time+of+arrival
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f3fdd1ac7784023571cf98/1626602962067/gogejanezuduwo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0213338a0fc3ca96a2fc4/1626349875484/gta_vice_city_money_cheat_code_for_android.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8c21b8f67167615ac3007/1625866779700/79992149937.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f501ba952f835132e8f5a1/1626669498916/90205516655.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8dd880388a1034d7d81a/1626115544749/22392107552.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f2f5ab04a1d9701796c8bb/1626535339119/nts_past_papers_free_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e80b8348fdc2594042d20d/1625820035437/gods_heart_for_the_nations_verses.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec998a831aaf5e928c3384/1626118538416/23747963979.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edef3da50f6e33a3262369/1626206013816/analysing_text_structure.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_off0000eb3a.bin
7528090ec5adcfc37cce344945a31e64f58bf5a8f0525d2958e4e1918e0c34db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3A 17212 bytes
font_01_sfnt_off00011846.bin
84e14ae38ec69ce38128c813e8eeebfcd61a4d9c2ee08e478bd3b7a0ef3f3934		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11846 10460 bytes
font_02_sfnt_off0001300e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1300E 16792 bytes

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