Malicious PDF — malware analysis report

Static analysis result for SHA-256 e666ce215cf4870a…

MALICIOUS

PDF

74.2 KB Created: 2020-12-06 03:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 7ed6faa87af2055532fd010737509ab5 SHA-1: d77239a1203932c34d589ab220340a233092f28e SHA-256: e666ce215cf4870a064dabf2f9f7b6bec3d469e5ca588881ec60f13a810c9951
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure and a PDF link farm. The ML classifier also strongly indicated maliciousness. The embedded links suggest an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/123?utm_term=andres+gomez+perry In PDF document text
    • https://xemaxokiba.weebly.com/uploads/1/3/4/3/134350412/39bfccf87565.pdfIn PDF document text
    • https://defagetomorig.weebly.com/uploads/1/3/4/5/134576552/8951596.pdfIn PDF document text
    • https://tanedozuwo.weebly.com/uploads/1/3/4/6/134644204/gewoke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfbcccd5-9f61-44c7-979c-c0d2f27980ee/12038697462.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12a77be9b6939510c7598/t/5fc8082f75dffe5f6f64d078/1606944816366/school_days_anime_ending.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc178ab6b97992eb56010ae/t/5fc86e83b74dd54858d90b0a/1606971013118/lords_mobile_payment_methods.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/tojemufegipipetovikavetop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f0fe07a-89de-4141-8c2c-5500a5b159eb/91792734899.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/acoustic_electric_ukulele_tenor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/146353ca-28e1-4ead-9521-1a1e578ae6aa/kisowir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b38f79f2-e48e-40e8-904b-63c2c016f974/vida_kazuo_inamori.pdfIn 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_off0000de5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 5180 bytes
SHA-256: 68c0af3d1d9f41c79287876bb7519723684763972ff491b9910a73c3ae72c302
font_01_sfnt_off0000effb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFB 14660 bytes
SHA-256: d64deb3456b3df5b7e5e6663aa31da1dcadc4642a61dc3869e29418ed6bd30e1

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