Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4ef65f312b4275…

MALICIOUS

PDF

75.3 KB Created: 2021-02-28 05:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8da2f86adeb7a6ca2d649d27fa9d48c5 SHA-1: 408b85b457bc91ce42bbb113d1cdfd178280a98f SHA-256: 2e4ef65f312b427574ef009a5f6c5a118b06cb76eab1e96ce94f35e6ea81ffef
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link disguised as a movie search result, which is a common lure for phishing or malware delivery. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the embedded URL leads to known malicious infrastructure. The ML classifier and ClamAV detection further support the malicious nature of this file.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=a+christmas+carol+1999+full+movie+english In PDF document text
    • https://cdn-cms.f-static.net/uploads/4495550/normal_601277097d928.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/garmin_vvofit_jr_1_waterproof.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/kjv_study_bible.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fcf3e62dc293.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466364/normal_5ff5094a49bfb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459188/normal_5ff2089647846.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/how_much_is_a_transmission_for_a_2004_honda_accord.pdfIn PDF document text
    • https://cdn.sqhk.co/silijebutu/dSiahh5/dragon_ball_legends_twitter_survey.pdfIn PDF document text
    • http://lalikexitaxixix.getenjoyment.net/lords_of_chaos_film_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_6029ae4496c7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426954/normal_60049c76852f4.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/senuresotewizilk9o23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e92c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92C 5552 bytes
SHA-256: 45c630af8ee5481149f8ac930aa16cadc51b91e9b9089aaaaa0421038c1d164b
font_01_sfnt_off0000fbf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF4 10680 bytes
SHA-256: a0923c8d86761eac56cdd29e112953230af56cd38a07533c10eea54a2de0c700

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