Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f6d244621a73ae…

MALICIOUS

PDF

68.7 KB Created: 2021-02-16 10:09:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: de62358cc5ff954f5ba5ef53e5d6da62 SHA-1: 0d17eef29014c790b3edd0bbc6b38b5d78b1e90a SHA-256: c2f6d244621a73ae54d25ce4d396e3a71ae03a2b6854bde62259b8c977c4cbb8
156 Risk Score

Malware Insights

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

The file is a PDF that contains a link farm heuristic, indicating it is designed to direct users to multiple external websites. One of these URLs, http://cleaner360.shop/wupisatizowolazenimuv1o92u.pdf, is flagged as a potential entry point for malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to 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
  • 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://jacksth.ru/wb?keyword=what%20is%20the%20best%20free%20voice%20translation%20app PDF link annotation
    • http://cleaner360.shop/wupisatizowolazenimuv1o92u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_5fd159eaa8d46.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/mefedabadujodemupuz.pdfIn PDF document text
    • http://cleaner360.shop/tavoxujisepedytml.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/jjhidig/trial_xtreme_4_remastered.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/uihjbha/zozalonesebabajonosisuzob.pdfIn PDF document text
    • https://famalekirujapa.weebly.com/uploads/1/3/1/4/131453917/9913576.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/netinuwa/rcslt_clinical_guidelines_videofluoroscopy.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/mentoring_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/35764002848.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/afrontamiento_familiar.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/abcd_telugu_movie_songs_free_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/60996762513.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/37179383106.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/95847695477.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_off0000d134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD134 5316 bytes
SHA-256: 2c6bb3c536a3379cc9c9c520ce3a014b73a851c731ac6cba2494199be2107ae3
font_01_sfnt_off0000e354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE354 10108 bytes
SHA-256: 66d38cc3e3522dde236dcabad3c08436c5de25ee303e974f8a5add687e1e08e0

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