Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d483026178c2cf1…

MALICIOUS

PDF

75.8 KB Created: 2021-07-16 07:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6da37c8d5157f9f83d57dcf57f564d64 SHA-1: f6735a0e3a9327d8cdefd03c1923b842d98bc543 SHA-256: 9d483026178c2cf189c5192ce6314eb03cdc9604a7f316eb34c819606b2ebd03
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing trojan. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to lure users to malicious content. The file's structure and detection by multiple engines strongly indicate a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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/razvivatel/yapz/~3/kVSxLQpkboc/square?utm_term=demotion+without+cause
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed42f40124a666ff421357/1626161908499/pacific_warship_mod_apk_unlimited_money.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60effd3c34da7a51e3f3c3e5/1626340669122/pros_and_cons_of_using_hydroelectric_energy.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e900b22a6f785f5832f935/1625882802484/the_two_phases_of_photosynthesis.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed7bab39532c3941c15d0e/1626176427200/read_lord_of_shadows_online.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee7a412a4cda1762617ab5/1626241601612/190_f_to_c.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_off0000caca.bin
9a380c5bda45b682c66c1dae605297a4a492f2083cdefcbac490d84f17dd9f35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCACA 10536 bytes
font_01_sfnt_off0000e2b1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B1 16792 bytes
font_02_sfnt_off0000fac3.bin
361b20ac0c261d9dd3133f4ba5814e26e322fa7bbc7a7c09a13103fa7d321354		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC3 15488 bytes

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