Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae83d307bcbdd1f…

MALICIOUS

PDF

66.7 KB Created: 2021-01-27 17:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 599115c37aad398e785de02bf645a78f SHA-1: 53213cc495eea549e21835ef3fc2dbcd7e743b13 SHA-256: dae83d307bcbdd1f0f3af64741fbfebfd31b13b4490e6235b0d4b3d71b40204a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that leads to a suspicious domain, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://druttle.ru/123?utm_term=popular+online+games+unblocked PDF link annotation
    • https://cdn.sqhk.co/noxivudeva/hhjZ9La/master_math_word_problems.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449605/normal_5fffb603d573d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481699/normal_600803b78e15e.pdfIn PDF document text
    • http://netlysy.online/wwe_raw_results_today_bleacher_reportai4pd.pdfIn PDF document text
    • https://pejivepomut.weebly.com/uploads/1/3/5/3/135339444/wikigejejefogefara.pdfIn PDF document text
    • http://copyrighthelp.info/87827079273umcvn.pdfIn PDF document text
    • http://jumbochecker.com/27786313803znf3y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486193/normal_5fc64c65c5316.pdfIn PDF document text
    • http://vivadoctor.ru/ice_cold_ball_classic_endless_arcade_game_download47jri.pdfIn PDF document text
    • https://cdn.sqhk.co/tadawatimi/Fuagi83/sniper_fighter_combat_elite_force_shooting_game.pdfIn PDF document text
    • https://nunibuzobaga.weebly.com/uploads/1/3/0/7/130740367/7441368.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386824/normal_5ffa0193368f5.pdfIn PDF document text
    • http://matroskin.space/rasuwadi1g3n2.pdfIn PDF document text
    • https://zovakobazala.weebly.com/uploads/1/3/1/4/131456363/xerifogagu_bobosefazexe_wixuno_rupafan.pdfIn PDF document text
    • http://shoop-fm.ru/52876409133h0548.pdfIn PDF document text
    • https://cdn.sqhk.co/merodobiweve/jfhaCib/guess_the_word_with_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pisik/barbie_dreamtopia_games.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/rubber_sheet_suppliers_in_saudi_arabia.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/rigesoratimuwavuki.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_off0000bcff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCFF 5400 bytes
SHA-256: 65c3283d22cda4d0a39e44d89cd4ae5ce41baa1d381d0aeecb327abeb5a00aa4
font_01_sfnt_off0000cf2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2B 9512 bytes
SHA-256: 294d97d136db50c16748be2f18db14964526946fea3a1ae5b3929a453d330dff
font_02_sfnt_off0000efb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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