Malicious PDF — malware analysis report

Static analysis result for SHA-256 a99482702c9b90e7…

MALICIOUS

PDF

80.0 KB Created: 2021-07-19 21:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: efa4a41f195ad1f4acd724017a847f03 SHA-1: a7f25a961c0a99e34e700f3df16207e2461c5729 SHA-256: a99482702c9b90e7f32558c2df72f3f43987fc9366668751fbc604716bd88de0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URL suggests an attempt to redirect the user to a potentially harmful site, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URLs are sufficient to infer a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/-7-cX3opz_8/square?utm_term=carbon+footprint+per+country
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4bb0bb84a576e6c102eb7/1626651403657/which_of_these_questions_can_be_answered_with_a_simple_yes_or_no.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2a8e336db64625198b7ba/1626515683167/25426410338.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed035a4616123fc5f5f7b8/1626145626232/72373593480.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f2a6475f13a15bd8170baf/1626515015472/kirefimexofojiruxagatefa.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_off0000d5cb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CB 16792 bytes
font_01_sfnt_off0000ede2.bin
66d21a1a4b1fc56391e8960c586637f02b5856f2ef360fb1ce34d4bfab12d041		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE2 10644 bytes
font_02_sfnt_off00010638.bin
024d750b67d289fe27019ae92a75943bb67b479a175752d29f9926c3babfbe6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10638 17456 bytes

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