Malicious PDF — malware analysis report

Static analysis result for SHA-256 301443270a58877d…

MALICIOUS

PDF

78.3 KB Created: 2021-05-21 10:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0498b36efe80b1488823e07036590322 SHA-1: 1dc42c7fd65d9590fea5f831b454e6db41af69da SHA-256: 301443270a58877da1cbbd148f268d83bdbef0dcecfe2d4ac10b105da42c5b2b
96 Risk Score

Malware Insights

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

The PDF file contains a URL that mimics a search query, likely intended to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wb?keyword=washington%20state%20basketball%20record%20by%20year PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418575/normal_5fea19b9d2717.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443594/normal_600f27d72e3fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404123/normal_5fe429e7d9892.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_6011e7c6578e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454432/normal_6013eba2c9a9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403117/normal_606615f8763b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425235/normal_5fe5466b9ede3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_606b8b83748a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381971/normal_5fcee649e33c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486743/normal_5feb222dd65cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476274/normal_6024bd33cafc6.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/bitizopovopaso/32515381968.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/66537088489.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/bad_ice_cream_2_swf.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/50853456486.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/alisha_chinai_song_made_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/66221176425.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/37188607341.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/86461700256.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/modern_family_season_1_episode_22_script.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/why_is_my_nespresso_not_frothing.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_off0000f596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF596 5520 bytes
SHA-256: dc33a096b603582576a17b68fc16ba9b82bd79133b045135d2c5e59bd9297974
font_01_sfnt_off00010866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10866 10236 bytes
SHA-256: 02317c665948739699a5467e97b3c6f1a59da1e80528cdda0b7d102d04d3aebd

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