Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f92a727f636b034…

MALICIOUS

PDF

76.3 KB Created: 2021-07-13 18:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2b812293c892b5dbe98ba8dbba9e7772 SHA-1: ced1527a17df6dabc385baaa1b6f3a6a6bf32cf0 SHA-256: 9f92a727f636b034fe4a0ce81b2883cd4b55e499d5e60ab3b9b5ebdd527a5d95
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to redirect the user to a phishing site. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

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://synerhu.ru/square?utm_term=my+right+eye+is+blurry+compared+to+my+left
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec912e4f2b1c51afa4d640/1626116398308/98125678656.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecbbd9526e29087382b9d8/1626127321454/silotuwu.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec79047726b430b46715f2/1626110212172/71577494864.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7ba4a7d3b385c94b40833/1625799242202/what_does_cn_stand_for_in_texting.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7c82f9ebc0053f315a112/1625802799138/what_does_30_square_feet_look_like.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8fadbcf8be39b5063399/1626116014108/united_feature_crossword_puzzle_answers.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7a0301d61f435cef4a66a/1625792560247/the_steps_in_writing_a_research_question_include.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c9721b22c82f862d6ede/1625868658632/41000284373.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_off0000c749.bin
d67b1b3c3fd500fb7a311425ca634d99678040dc4b1ab08197f71177532464d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC749 16540 bytes
font_01_sfnt_off0000f253.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 16792 bytes
font_02_sfnt_off00010a6a.bin
e90ac6c4430f4a7c01d2897702135e8898be1cbfbdca4aef7bfb3f6489ba9eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6A 11308 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.