Malicious PDF — malware analysis report

Static analysis result for SHA-256 140654ef6d47b838…

MALICIOUS

PDF

79.4 KB Created: 2021-03-06 02:59:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 3330454408e6514c8be7421e56df371a SHA-1: aaef3ce798500b3dbfca5b189eb0dc5fda99c74d SHA-256: 140654ef6d47b83810d542df614551a3675775d26aec1537c72c83e69d25de55
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominently featuring '8 ball pool long line hack apk' in its query string, suggesting a lure for potentially malicious software downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://fokemale.ru/wix?keyword=8+ball+pool+long+line+hack+apk+3.9.1 PDF link annotation
    • http://kismykeitio.best/billu_bar_bar_full_movie3emfc.pdfIn PDF document text
    • http://siankaanmexico.com/sony_cyber_shot_dsc_hx300_lenscdmyu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_60242dbe77971.pdfIn PDF document text
    • https://cdn.sqhk.co/rexukewanej/fubjebZ/37270605303.pdfIn PDF document text
    • https://cdn.sqhk.co/lakodatoli/jhiLJZt/6394677097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_602782791aa56.pdfIn PDF document text
    • https://cdn.sqhk.co/gadujotev/jbJn1t8/pevemimapuxubufinutatet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413126/normal_5fe81cbcaabdd.pdfIn PDF document text
    • http://salet.store/microsoft_word_document_download_for_windows_10ra27q.pdfIn PDF document text
    • https://cdn.sqhk.co/xagunetoxa/egc4cia/carrera_car_racing_challenge.pdfIn PDF document text
    • http://zabozel.iblogger.org/xugusufesi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421354/normal_600e510344711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450634/normal_60153379a31b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gezofavuxova.epizy.com/77706807875.pdfIn PDF document text
    • http://turebaso.epizy.com/fexarosisisogov.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/70751059580.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/99050595543.pdfIn PDF document text
    • https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_f356d207b6704361aa22c5d6f500297b.pdf?index=trueIn PDF document text
    • http://luwemazezabubat.rf.gd/chilled_water_air_conditioning_system.pdfIn PDF document text
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_f8e6e8d0defa4eeda01ddbc70cacf19a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mefovu/ganaradutetigokazatetexi.pdfIn PDF document text
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_09317d6f821d4d22aa6f848cdef8bce5.pdf?index=trueIn PDF document text
    • https://4123e755-5e7e-4fb8-b167-49ba90d37259.filesusr.com/ugd/fd3290_f4364d2a09ae4b5b8b42fc2f76e49a21.pdf?index=trueIn 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_off0000f9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C0 5628 bytes
SHA-256: 25ee57649ea189a760851bde43c51a04176009edd6186c71aed287c9dbb28ae0
font_01_sfnt_off00010ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE5 10280 bytes
SHA-256: df46810161a08000dccb5a2d9fe6d5e085fa05bbc4729c34085f8cdc389e7355

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