Malicious PDF — malware analysis report

Static analysis result for SHA-256 84738ff64155d6a3…

MALICIOUS

PDF

80.0 KB Created: 2021-02-19 18:03:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cbd93890650cc9efed728fcfc1d0fd3d SHA-1: a0f0c03933a26a36fbbdca4a3d7b2e4444ceb940 SHA-256: 84738ff64155d6a38e6eaae3a12fbf88cdf72d44bd53ca7ac0a28bb9f961f9ad
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into clicking a link, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=zolo+liberty+plus+manual+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483097/normal_5fc9bd97eb507.pdfIn PDF document text
    • http://verifybadgesbusiness.com/sap_hybris_commerce_6._7_installation_guidemmp5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5fd6d905c43b3.pdfIn PDF document text
    • http://ekzo-fruit.ru/delhi_belly_movie_ringtones_free4ysr0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492555/normal_600c395e066a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455380/normal_5fe7c3fd03d5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409244/normal_5fe18ccc0492b.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/iSwqPif/smash_ultimate_all_crowd_cheers.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/i65higc/short_funny_animation_video_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423431/normal_5ffaa3d41b4f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499300/normal_5feb462e68631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_5fe8ad5621bda.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/tazibabebamep/poximufesejapasuzelagoj.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/ritisevur.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/adobe_illustrator_templates_free_s.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/what_are_the_4_main_types_of_paragraphs.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/angeles_y_demonios_dan_brown_libro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE88 3076 bytes
SHA-256: 087822bddd444de04983d4fd29f20e0e8d17105c999294dcb8007477946b893a
font_01_sfnt_off0000f97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97C 5388 bytes
SHA-256: 93b942ecfdc4592bc3d04a22679af86026d500d9a584fd5e40244c4dc439179c
font_02_sfnt_off00010bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB7 11472 bytes
SHA-256: 7762c0f553dcc60e9fce953df65468e13373e07b354e0e2a1acad43da17ab83f

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