Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c8f27c65c495ad…

MALICIOUS

PDF

80.7 KB Created: 2021-03-11 07:02:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6a5fd700c09547d64ecc40e7f5f34f80 SHA-1: 87b1944d5399d9bb1b360ba740c687f7f31c192c SHA-256: 45c8f27c65c495ad07e2eebca8b2efad4b01d181820c110f419d191235bf4994
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL suggests the document's purpose is to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jacksth.ru/award?keyword=amartya+sen+theory+of+justice+pdf PDF link annotation
    • http://munasimowijuxi.getenjoyment.net/89378437363.pdfIn PDF document text
    • http://zebisol.mypressonline.com/the_mythology_of_the_night_sky.pdfIn PDF document text
    • https://cdn.sqhk.co/sujoxeti/gTNGSKJ/reactive_form_checkbox_angular_7.pdfIn PDF document text
    • http://bitjoms.xyz/laxavetigulezopibupulegok02ny9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463308/normal_5ff781beeb4c1.pdfIn PDF document text
    • http://it50save.info/annabelle_creation_full_movie_freeauqro.pdfIn PDF document text
    • http://purpless.vip/27429059959geycr.pdfIn PDF document text
    • https://cdn.sqhk.co/vojazodelud/LjhdC4a/dama_all_italiana_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421468/normal_5feec20932886.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuzajomugi/ifjdgdW/water_slide_3d_vr_mod_apk.pdfIn PDF document text
    • http://republvinb.fun/84351866027mhrax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496812/normal_5fef8925f0ccd.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/11787227376.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/dagasopones/social_media_content_strategy_template_free.pdfIn PDF document text
    • https://7aff118d-26f6-4d76-9bc9-1838009e7274.filesusr.com/ugd/f80014_fdc35eee7f30421f8b2eed42104bc7ca.pdf?index=trueIn PDF document text
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_4b666655f98048288477ba463bc7e69f.pdf?index=trueIn PDF document text
    • https://2e03c77f-99cc-4591-9807-54d8d49c9ce6.filesusr.com/ugd/759733_6d6635ab376643cb9f435398ecddabe8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/american_college_of_radiology_guidelines_contrast_nephropathy.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/60836034496.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/macroscale_and_microscale_organic_experiments_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/81838072902.pdfIn PDF document text
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_1a661bc6ff5547ae9d0fc4d613e1bfb5.pdf?index=trueIn PDF document text
    • https://e8f98835-b194-42a5-b43f-fe2f29920dd6.filesusr.com/ugd/bf650e_49772f07778a44edb9d5bd148922d28b.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_off0000ff9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9D 5528 bytes
SHA-256: bbceb3dd3020077d8c32e3ee99c0f824cadd076e20907987de3272d6d0828bbb
font_01_sfnt_off0001124f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1124F 10224 bytes
SHA-256: 02633193da290788105fadf467fd27fbca895a962a3d45eb8acda32d790ea73e

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