Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67de953596f4ab2…

MALICIOUS

PDF

71.0 KB Created: 2021-03-03 15:48:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af5508baf67cdeba1df5722928d9c955 SHA-1: 5379ecb93566dff68fc7b172b52050dcbba6086d SHA-256: f67de953596f4ab23d667806b8b052ab29d36b671bcd398e5ba78be319e5e0b0
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, indicating a high likelihood of malicious intent. The PDF contains an embedded URL pointing to 'druttle.ru', which is a strong indicator of a phishing or malware distribution attempt. No scripts were extracted, but the presence of embedded URLs and the overall detection suggest the document is designed to redirect users to malicious content.

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://druttle.ru/wix?keyword=herb+adams+chassis+engineering+pdf
    • http://gemobaraza.iblogger.org/88858521519.pdf
    • https://static.s123-cdn-static.com/uploads/4374851/normal_5ff014529118b.pdf
    • https://static.s123-cdn-static.com/uploads/4476148/normal_5fff9eb8dd84b.pdf
    • http://kovativegapok.getenjoyment.net/86980838281.pdf
    • https://static.s123-cdn-static.com/uploads/4485153/normal_5fceafa93e69e.pdf
    • http://xozivupanivos.22web.org/imagenomic_noiseware_professional_crack_free.pdf
    • http://ruwazumusef.scienceontheweb.net/how_to_take_apart_a_keurig_vue_to_clean.pdf
    • http://minesaxofunawi.getenjoyment.net/82469042967.pdf
    • https://static.s123-cdn-static.com/uploads/4378620/normal_5ff5a4ee0b65c.pdf
    • https://cdn.sqhk.co/wuvupalib/zjeV9jj/love_tester_real_online.pdf
    • https://cdn.sqhk.co/kinanekoxo/siLhhif/game_of_empires_heroes_war.pdf
    • https://cdn-cms.f-static.net/uploads/4502246/normal_60352e5676279.pdf
    • https://cdn-cms.f-static.net/uploads/4381762/normal_603e0d7a56a43.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zenoridofagokev.epizy.com/warrior_cats_kittypet_name_generator.pdf
    • http://rixijine.rf.gd/phonics_blends_worksheets_first_grade.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d94c.bin
6dd967a8e77b4d8016295b94b061b77afd43817a2c88a0a872efd863a5d279a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD94C 5636 bytes
font_01_sfnt_off0000ec4a.bin
1f3539f94798095dce631fb4ecb2baeb1239536bd1175ae80eee52ffcf677761		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4A 10208 bytes

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