Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff97e8047903871a…

MALICIOUS

PDF

102.7 KB Created: 2021-03-30 04:39:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 72ec0d9d6b8faa4dd5c37f115c301473 SHA-1: d1ad78bfe45af1d4938e381c7aefd1369a24f1c1 SHA-256: ff97e8047903871abc2b00c2178e1881fc79ee7cbf275173e6fafd2295252ab7
126 Risk Score

Malware Insights

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

The PDF document contains obfuscated text and multiple external URLs, with one URL specifically mentioning 'ghost recon breakpoint map pdf' as a keyword. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/award?keyword=ghost+recon+breakpoint+map+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490936/normal_60260ee0af759.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/alimentos_prohibidos_para_diabeticos_e_hipertensos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405419/normal_5febf675148c8.pdfIn PDF document text
    • http://b0xberry.online/7798337488374x8o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403674/normal_603bdf3891ad3.pdfIn PDF document text
    • https://notususapi.weebly.com/uploads/1/3/4/0/134012365/nevawopuxukajivuj.pdfIn PDF document text
    • http://tizezs.xyz/lobobepunajifedopumaykybg.pdfIn PDF document text
    • https://livurexile.weebly.com/uploads/1/3/2/6/132695833/fbcc2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476285/normal_600eb20ca5201.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/exercice_corrig_capteur_de_pression.pdfIn PDF document text
    • https://wavarojejepifog.weebly.com/uploads/1/3/4/5/134590929/letiveseki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_601233b477996.pdfIn PDF document text
    • http://xebupalifu.22web.org/water_cycle_worksheet_for_4th_grade.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vavilonogamet.epizy.com/puzipakosoziwu.pdfIn PDF document text
    • http://wotexel.rf.gd/chronology_of_events_template_word.pdfIn PDF document text
    • http://kamupipoduw.rf.gd/chemistry_lab_apparatus_and_their_uses.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/95227520561.pdfIn PDF document text
    • http://mekemiwi.rf.gd/ipl_2020_file_download.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_off000155f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155F6 5596 bytes
SHA-256: 1bc04848f1290f66cc9e67f55ed1a02b16010e53169d2e8100228954ae195e33
font_01_sfnt_off000168d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168D4 10836 bytes
SHA-256: 203af5d8d70b62a01165bf6abbb8ca5d75ab37492c457899e2d4ba99d6505e4a

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