Malicious PDF — malware analysis report

Static analysis result for SHA-256 7994d4e1b595f2af…

MALICIOUS

PDF

79.1 KB Created: 2021-07-14 06:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 717c7a832ada5145163007abccb9780a SHA-1: b064fa008e47f59e59f6ac276bcef2ede39ad250 SHA-256: 7994d4e1b595f2af2425fe318ab67b4e2882558288aa7b42074559babe634321
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that are likely part of a phishing or malware distribution scheme, as indicated by the ML classifier and ClamAV detection. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a malicious resource, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9478

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/~3/7R6buoffwiA/square?utm_term=wings+of+fire+an+autobiography+of+apj+abdul+kalam+pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e95bd16e267257943c93cb/1625906130039/98853513306.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edeb257979814f85a9b773/1626204966071/gudadamifafajo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee10252a4cda17625aa3ae/1626214438019/pdf_of_book_wings_of_fire.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8f3390a287971af980be6/1625879353430/financial_plan_for_catering_business.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee0bd19c71001bedf1f45b/1626213329126/adverbs_of_frequency_questions_exercises.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec792a154eb17b6848eef0/1626110250183/use_rewrite_in_a_sentence.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edd4d4a9aa746350cad0aa/1626199252975/21728309091.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8b9ef6fc466b5bf3a1bf/1626114975203/kogererusetitur.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_off0000d05d.bin
ce9f95a666eb897f6c75a692fbdd809c549ccedf594b112e3e724eb54d61f23d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD05D 11512 bytes
font_01_sfnt_off0000eb05.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB05 16792 bytes
font_02_sfnt_off00010317.bin
710f759ee13c7a63f969bc61f2dc943b41e1d56f3fe177e55028dcdbf45b1b53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10317 16652 bytes

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