Malicious PDF — malware analysis report

Static analysis result for SHA-256 45dfb560282d4e17…

MALICIOUS

PDF

87.8 KB Created: 2021-02-04 13:39:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 71fb4062432bdb3b1e22dcae50d66080 SHA-1: 2bdd649bfa898b7b45fb16c6c72d0358c52637af SHA-256: 45dfb560282d4e17f9c72f13025499d1ebb2a0195beed667975ec23ebceca026
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of a large number of external links, identified as a 'PDF_SEO_LINK_FARM', suggests a malicious intent to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and the nature of the heuristics indicate a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://jottigo.ru/aws?utm_term=jigsaw+template+9+pieces PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379732/normal_6011f74212f8e.pdfIn PDF document text
    • https://cdn.sqhk.co/netimawifes/7iiicih/ligofazedut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494875/normal_6016d0d3b49f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382187/normal_5ff3dd5e50d20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_6011629e67943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385852/normal_5fd7cc5700fb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365536/normal_5ffdffb8d1723.pdfIn PDF document text
    • https://cdn.sqhk.co/sopaluwokaja/ufRgcOw/15116073726.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449766/normal_6002707a7647f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406223/normal_5fff27254a1a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455376/normal_5fec341dda3e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470688/normal_5ff1c6b45ae0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371005/normal_5fd0826ecd3ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487194/normal_5fe19ec70b36c.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/fizozo-luvidemufuruk-geralozuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/desavusomo/ha3HkBi/easy_dessert_recipes_chocolate_mousse.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xuvamuba/razarabudavogo.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/lavibobejesa.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/ketojuwipapalezalozazu.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/batman_begins_full_movie_tamil_dubbed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B59 4964 bytes
SHA-256: 3cbe53b4069800d0c4c5ad050484cf742c5bd030f98e2d87989b3006c53ae8b5
font_01_sfnt_off00011c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C55 11624 bytes
SHA-256: 5a48166355e411b6991e99197ece79a63e96eef9fd78f846ea63ab45c71e2a73
font_02_sfnt_off000143c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143C3 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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