Malicious PDF — malware analysis report

Static analysis result for SHA-256 5862c44835aaccbf…

MALICIOUS

PDF

82.3 KB Created: 2021-06-25 16:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e0149f1a769dcf07319d96e8e2b65531 SHA-1: 699c9da941a9ce9641165295d5395eafd906735c SHA-256: 5862c44835aaccbf9b0697bff8359d02a85021040f84ce3d2ebdc09f342302a0
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a heuristic indicating a deceptive download button and embeds a URI pointing to a raw IP address, suggesting an attempt to trick the user into downloading a secondary payload. While no scripts were explicitly extracted, the nature of the embedded URI and the phishing detection strongly suggest a malicious workflow, likely involving the execution of further malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://accessiblevehicleservices.com/userfiles/file/46212059209.pdf
    • http://folientastaturen.pl/_data/file/97732528913.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160982e501f828---23709744431.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/7800bceca604e1ba0e4813ad82285dec/kewatinaneja.pdf
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160768a11ced70---37688687297.pdf
    • http://artgraf24.pl/userfiles/file/35962137442.pdf
    • http://wurbs-hanau.de/userfiles/file/nodivubigupafumurezulib.pdf
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/2etlj7q7cicftod0me98nhqan3/musawolekug.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160bd6033e352e---figadebutuvapotolobiva.pdf
    • https://hasekei.jp/userfiles/file/49257664954.pdf
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/160b287eb2ae0f---dasutonapaxemelupuw.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8b979b7ca---gubir.pdf
    • http://dental-forum.ru/userfiles/file/97873712125.pdf
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/b44e95d306327aa80398fba08d185b14/39136335896.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/62521d4cf06f9aacbf66510513df27a2/gifefutam.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=thoptv+app+to+download
    • 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_off0000e0dd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DD 16792 bytes
font_01_sfnt_off0000f8ef.bin
3ccb230743889e6396ddfd33ad2866b41a2995876d23d9c93ccb3729e9c432e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EF 17348 bytes
font_02_sfnt_off00012660.bin
54ed372fc9f3621248ba2e124f503cf84137d4a60d2fa7b7ec5f760d49ae21df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12660 10112 bytes

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