Malicious PDF — malware analysis report

Static analysis result for SHA-256 305c43af40b55824…

MALICIOUS

PDF

71.4 KB Created: 2021-02-23 23:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2378a6313bdbf6b61da1cdcf131d3e86 SHA-1: e55bbca24d23a2678811419e4b7a675a6c5f8899 SHA-256: 305c43af40b55824630515191b2be140862292dd176ec36329290551f1531ac5
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'Dj liker apk old version', suggesting a lure for users to download potentially unwanted or malicious software. The presence of multiple external URIs, including one pointing to 'leonvi.ru', indicates an attempt to redirect the user to malicious content or download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=dj+liker+apk+old+version
    • https://cdn.sqhk.co/mexovaru/iaij9hd/tutipuvogir.pdf
    • https://cdn.sqhk.co/vavapezami/dGwqCFr/talking_cat_tina.pdf
    • https://cdn.sqhk.co/kobewudojuvo/l9A8ibV/guidebook_definition_and_examples_of_personification.pdf
    • https://cdn.sqhk.co/jovowosifo/yniinhb/best_free_facer_watch_faces_for_gear_s3.pdf
    • https://cdn.sqhk.co/savimatuv/biehhRa/paxudelezujeleginani.pdf
    • http://rewuvov.iblogger.org/78861598075.pdf
    • https://cdn-cms.f-static.net/uploads/4417207/normal_5fe75686493c8.pdf
    • http://edevletorg.com/50614682197xi6fs.pdf
    • http://sizowozoru.iblogger.org/candy_crush_soda_saga_hack_android.pdf
    • http://mmmmmme.space/35138438193my9yp.pdf
    • http://lilidabegib.22web.org/daxedejuroruxov.pdf
    • https://cdn.sqhk.co/nodewanase/ihiXjb8/planet_alignment_april_2020_astrology.pdf
    • https://cdn.sqhk.co/kosozezoxuxe/hiXjctU/offline_wallpaper_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://parezemutosulaz.rf.gd/listening_answer_sheet_british_council.pdf
    • http://sasududazo.epizy.com/15958700093.pdf
    • http://xeziredo.epizy.com/26397562068.pdf
    • http://goruwon.epizy.com/pure_css_responsive_website_templates.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_off0000db42.bin
12565a5af9ac8af7ae8fd03e2d043de761ee4ee85da25f7f050ffbe465b779a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB42 5152 bytes
font_01_sfnt_off0000ece9.bin
19947df0bdd5033ec205bc05692383fbbacdc3b5a0afeb923427a9b5c48027c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECE9 10512 bytes

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