Malicious PDF — malware analysis report

Static analysis result for SHA-256 1168e4396758f120…

MALICIOUS

PDF

67.9 KB Created: 2021-05-06 22:53:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d855baf8c02147043ac6cb2b69d61a4 SHA-1: baa3eef67a7482302a297867197414cff5bcfebe SHA-256: 1168e4396758f1209b6a99ca7bea5dc3c926d0dfbeaf64d6df7199d61b7ca1a8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains embedded URIs pointing to potentially malicious sites, suggesting an attempt to redirect users. Although no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a common pattern for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/cb34d4f0eea0e6c71afbfb4630d9ab9d/zosalojidi.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/2bb559a6a64bac47661b3493d14764ff/95476290137.pdf
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607571558aa51---92610677295.pdf
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/fbdcb72965c2ab29288c4ea97fb2dd35/96186166586.pdf
    • http://angarakshaksecurity.com/userfiles/file/7720971828.pdf
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/5c4083395a18213b9de903a43ea6546f/dinotebafovubukoto.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607125081dd9a---sevezanunugewo.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160862096120ee---86362933564.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae0b8067d3---lenugaliluzevoburokox.pdf
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf979c43a7---duvalazobokor.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1606f02840d5ea---92131316146.pdf
    • http://hanhthien.net/uploads/file/wuretivupusasagadokinare.pdf
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16085b0d9ba55e---58336016479.pdf
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/d81976e2773110002b9ee3ce3a510c25/rorofesagotof.pdf
    • http://banlinhkienlaptop.com/userfiles/file/4297036610.pdf
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/7579a3d7abcc845f473d37cba188ddeb/9456547564.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16088cab62b3e6---72165454467.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=assam+adivasi+hd+video+song
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd89.bin
834d7d100770b97914be2720bde056dd50b16556a3a3c90da91f8618c9afe838		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD89 5160 bytes
font_01_sfnt_off0000defc.bin
09686bca5aa5e163caa6e8c8c85d855c6bb2b12553f35b46e4f64ad749b94840		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFC 10412 bytes

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