Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f80022a80ac02e2…

MALICIOUS

PDF

81.9 KB Created: 2021-07-13 19:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: db22366526f3e4dd02c3fabca50fdcdd SHA-1: 630b7c96c61b48eb216939a57e9a18270951990a SHA-256: 0f80022a80ac02e2a4e5612ab932cf3fc00664430593d1d0af6d16b6b64bbff3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. The presence of embedded URLs suggests an attempt to redirect the user to malicious content or phishing pages. Although no scripts were explicitly extracted, the nature of PDF malware often involves exploiting vulnerabilities or embedding malicious JavaScript.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9473

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/razvivatel/yapz/~3/0YvHz_IItD0/square?utm_term=2+cm+and+50+effaced
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec8557fe047727940be207/1626113367403/rofopeniroregawi.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90f5f320dbd0de28069e0/1625886559798/94496536972.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8cbacc30d520a4451261a/1625869228231/69305187616.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e926798ce0e10532d2e23f/1625892474005/merge_multiple_files_into_one.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7b0afd0799e4214be4605/1625796783401/xasivubabijaros.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8ca08351081123f7c2c6e/1625868808300/kovanadabikal.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eca2d511a746407a44486d/1626120918007/repetition_of_f.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec98fdc81c37306b30a911/1626118397970/nail_shop_on_47th_and_damen.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_off0000df31.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF31 16792 bytes
font_01_sfnt_off0000f748.bin
7f22ab672d10dd60e3f7d1f2882e0fed72f890892bc8c25d7a861244606de89c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF748 10292 bytes
font_02_sfnt_off00010e88.bin
8f2d30509b1f7edac67ac9e87a46e98ffdcea414880c53fcd76a9d44fd2e8d38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E88 17276 bytes

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