Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecedd607162a59f4…

MALICIOUS

PDF

82.8 KB Created: 2021-07-19 11:21:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1716f7698b35ed652315cf8d37a79e8c SHA-1: 7547ea425db40c85272dcda8dab96960950c4e48 SHA-256: ecedd607162a59f4a9093c685bb5cbc34552a27f74b902d3752e79034698c0a2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded URLs that likely lead to phishing content. The ClamAV detection 'Pdf.Phishing.Trojan-d2528dad23a95d95-10044376-0' further supports its malicious nature. No scripts were extracted, but the presence of external URIs suggests a redirection to a malicious site, likely for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/~3/0YvHz_IItD0/square?utm_term=frequently+blinking+eyes
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed478236a7a57c1cf150c8/1626163074902/5975847782.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f098191c7a3529f897b1ce/1626380314098/weziv.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee701a6bb0602df2147fc2/1626239002755/52693525988.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f525ab860d895b483d90e8/1626678699669/chemistry_ncert_class_11_solutions.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f52cc25f13a15bd835328d/1626680514381/genulomidalugusalususaga.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4ca1db386920ff6dd69f7/1626655261157/vuvumafepofamaxesome.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9dcabcf8be39b507b878/1626119627109/tapeworm_is_caused_by.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f04280161c0660543bbef8/1626358400514/33978683049.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f125c39b6f23611956b6ef/1626416579297/ss5_form_download.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee79c607d0587a3766956f/1626241478301/79832247083.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efeabd96309e3685a9cabc/1626335933291/condensation_exothermic_or_endothermic.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f015a549582827e2fe9c88/1626346917886/kowuzamadev.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f1d4840411337720c790f3/1626461317370/phenotypically_identical_bacteria.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_off0000e4dd.bin
6b3662682f04117e48263195a292f6dccef6ec6ba6da7428b6772e79a8f2aee4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DD 16248 bytes
font_01_sfnt_off00010ef7.bin
fda07ec2f26b7f014fedf55aea75277b13514bb8ef116674f73185d73b8c818d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF7 10572 bytes
font_02_sfnt_off000126db.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126DB 16792 bytes

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