Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec64d714d5609d5…

MALICIOUS

PDF

84.6 KB Created: 2021-05-03 20:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1689e12ae312257d7db8d589276f848 SHA-1: de7c2bb38d58e41ea02754fdc2d8c67cc0c05e02 SHA-256: 9ec64d714d5609d5376af4b021b2c4dc58a5718a6f157328591ca323a149da91
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs are consistent with phishing lures designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dafemum.ru/strik?utm_term=how+do+i+find+my+iata+code
    • https://static.s123-cdn-static.com/uploads/4406785/normal_5fee7ad8b19fc.pdf
    • http://fukerijinexin.mygamesonline.org/buongiorno_principessa_piano.pdf
    • http://pelubexeto.getenjoyment.net/botulismo_de_origem_alimentar.pdf
    • http://jesibijifinuz.mywebcommunity.org/typhoid_fever_in_pregnancy.pdf
    • https://cdn-cms.f-static.net/uploads/4366676/normal_603e2b58c0480.pdf
    • http://bosegabowatitup.iblogger.org/nijivopuwulinoz.pdf
    • http://roxedizusugu.mywebcommunity.org/41091490430.pdf
    • https://cdn-cms.f-static.net/uploads/4468819/normal_603a5efca152c.pdf
    • https://cdn-cms.f-static.net/uploads/4468261/normal_6031bed7b96c7.pdf
    • https://cdn-cms.f-static.net/uploads/4444622/normal_60144c14843fb.pdf
    • http://nekidifuton.medianewsonline.com/tevirutolusawinedadasow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8a89c5bc-485b-4808-980c-66c60e8d9908.filesusr.com/ugd/834936_819fa1b768754ab4873b481db1069456.pdf?index=true
    • http://gurunetotej.rf.gd/past_tense_present_tense_worksheet.pdf
    • https://07bd7893-a6ec-44d5-90fe-c719e602c0bd.filesusr.com/ugd/aafaff_6a942a26ef354794a2b9707c0c054c55.pdf?index=true
    • http://jisunopesaluzi.atwebpages.com/how_much_do_long_haired_dachshund_puppies_cost_north_carolina.pdf
    • http://jivobolalozula.rf.gd/80106192798.pdf
    • http://mepitar.atwebpages.com/derovelowimi.pdf
    • http://pozajuw.atwebpages.com/where_to_drop_off_donation_clothes_near_me.pdf
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_500fc329b74d4268a5cae1a43a27fb77.pdf?index=true
    • https://f1c0478e-57b3-422a-b8eb-433964b677d2.filesusr.com/ugd/16c17d_e34f5f66cbc34989b8f33a917ef8eae2.pdf?index=true
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_663cd68d94e44b5f8a9ed62b77ac5a0e.pdf?index=true
    • http://pasifowon.atwebpages.com/the_witcher_3_ps4_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f39.bin
4d9fb76d90c31cb7fd08ba1ba0f0865a7e6989391f25162cc243d0e773e219e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F39 5016 bytes
font_01_sfnt_off00012054.bin
f158ed9d5b7d1a51a3483861c9ed87ade88974d2880b8e74299e2a8862415fbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12054 10784 bytes

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