Malicious PDF — malware analysis report

Static analysis result for SHA-256 407a0198a2cbcfe2…

MALICIOUS

PDF

79.4 KB Created: 2021-03-26 06:28:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 479e34cfee83ad6ca1f52180394b4e67 SHA-1: 0780c58d925dca1345168ca3ff0952035baf52b2 SHA-256: 407a0198a2cbcfe2307400135b4e836fe874dbc82277126b36cd5abd7def6bd2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, characteristic of a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution through these linked resources. The document body text, though heavily obfuscated, contains keywords related to 'Cantoral liturgico pdf' and the authoring application, suggesting a lure to disguise the malicious link farm.

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://druttle.ru/award?keyword=cantoral+liturgico+pdf PDF link annotation
    • https://guxemufisi.weebly.com/uploads/1/3/2/7/132710659/7141496.pdfIn PDF document text
    • https://xinotojopafexiz.weebly.com/uploads/1/3/4/3/134316842/romoge.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/EjdObou/litupaketud.pdfIn PDF document text
    • https://dibapanapuro.weebly.com/uploads/1/3/0/7/130776085/xekilej.pdfIn PDF document text
    • https://betetaguzom.weebly.com/uploads/1/3/2/3/132303315/jeduwuk.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/bafff77a3ec469d.pdfIn PDF document text
    • https://cdn.sqhk.co/monazaxumol/xjcUHjb/video_downloader_chrome.pdfIn PDF document text
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/6263942.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/5576ae84-1e23-4081-8806-9070fcf98194/actividades_para_evaluar_la_lectura_en_primer_grado_de_primaria.pdfIn PDF document text
    • https://02ee9779-94d6-4ec7-959f-c0f99fe19a35.filesusr.com/ugd/cdc607_a645aec0ff344079abbac71498b9bf5a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/tewifalozabebulamojopugi.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/mipup.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/sandisk_sansa_c240_1gb_mp3_player_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/12931873195.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ec2c53-5cc4-4892-846f-9ad69fe818df/xedirorujuninesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d2cc5ef-4975-4cd8-a032-62f58a112be6/buruzerabogajebilafawozes.pdfIn PDF document text
    • https://e1d5fa5a-667c-4d22-bb72-2ec96b4ed0f7.filesusr.com/ugd/01f30d_b83fb58a696d4397a1c4acf695417894.pdf?index=trueIn PDF document text
    • https://45f0f727-c607-4398-b3b7-8b42e23b21b2.filesusr.com/ugd/0a84ca_08e22d9486e440dc82a1b6d60f29d0e5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/diribufemir.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_off0000f8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C5 5048 bytes
SHA-256: 587076453b3940c536c130b3ddb26f901e4f870e46122096b727bf14acb5f20f
font_01_sfnt_off00010a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A05 11680 bytes
SHA-256: 5c72e6a59e299a481f800dc04fc362c4cdac7009f48f26c6ada8abe7656a32bc

Open this report in the interactive analyzer, or submit your own file for analysis.