Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0027eb857367055…

MALICIOUS

PDF

74.1 KB Created: 2021-02-12 05:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 07005a3c03279a506d0a66bd50f9c995 SHA-1: 08aacd1518a28993f7a290c9480a7b06791e50f2 SHA-256: b0027eb8573670557765d9cdef5e9893242b4670f4ffd3fb139118ce5563a2d2
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by multiple heuristics and a machine learning classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm designed to distribute malware or phish users. The primary URL points to a search result for 'fantastic beasts pdfstop', indicating a lure to attract victims. No scripts were extracted, but the PDF structure and numerous external links strongly suggest it is used for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=fantastic+beasts+pdfstop PDF link annotation
    • https://rolutadaneked.weebly.com/uploads/1/3/2/6/132681657/8692005.pdfIn PDF document text
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/gibogasava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404503/normal_5fd045bb42fca.pdfIn PDF document text
    • https://jenifamizoj.weebly.com/uploads/1/3/5/3/135319667/kusanati.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424982/normal_5fcf46df4ed2c.pdfIn PDF document text
    • https://feposogasutam.weebly.com/uploads/1/3/1/3/131384530/bitobadezesobo.pdfIn PDF document text
    • https://lopiranurepo.weebly.com/uploads/1/3/4/7/134735856/2319631.pdfIn PDF document text
    • https://togijiwasifuva.weebly.com/uploads/1/3/1/3/131398416/xugekuxo.pdfIn PDF document text
    • https://ranemexamegen.weebly.com/uploads/1/3/4/4/134440137/zekemoporiredonabuk.pdfIn PDF document text
    • https://xowozasa.weebly.com/uploads/1/3/3/9/133999953/gadabubopabo.pdfIn PDF document text
    • https://pinafizupefed.weebly.com/uploads/1/3/1/3/131380591/2428816.pdfIn PDF document text
    • https://lojigimab.weebly.com/uploads/1/3/0/8/130814508/6147246.pdfIn PDF document text
    • https://sazeduxawi.weebly.com/uploads/1/3/2/6/132695343/7826045.pdfIn PDF document text
    • https://werevofapopaja.weebly.com/uploads/1/3/4/4/134492388/847665d8871afbf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suxiweke/merofez.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/donalulevivaxuxaxamug.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/civil_engineering_project_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/happymod_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/silicon_valley_season_5_episode_4.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_off0000e61d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61D 5116 bytes
SHA-256: 75cdf9f610e4efcfaefd3e2d815d6d5d71f9f5f7f1e20423cb3cab871ee86869
font_01_sfnt_off0000f796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF796 10592 bytes
SHA-256: db0be1de4af128ad9fa5a37bcdc833cf760b2b317e209801936b8146fa845df3

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