Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e8a2904d992192…

MALICIOUS

PDF

63.3 KB Created: 2021-02-18 21:33:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6e238188849505199ed4a929d61c6dbd SHA-1: 217abcc2d6b4828b0e2f7a7bd432897ce3da6f2c SHA-256: f5e8a2904d992192f42f138b26a59e942a0b7b76be4e375f72f2bda896e361a5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of external URIs and the document's nature suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/strik?utm_term=dynamics+of+complex+networks+and+systems PDF link annotation
    • http://tublitalia.fun/49660416098s3d0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390074/normal_5ff8c411a2ff6.pdfIn PDF document text
    • http://unreguezff.rest/determining_the_limiting_reactant_lab_answers8o0tu.pdfIn PDF document text
    • http://naderuromopuru.22web.org/hydration_of_propene_to_form_isopropyl_alcohol.pdfIn PDF document text
    • http://reduslim-italy.site/54907467354v8wgw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402533/normal_6001257620cb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415068/normal_5fe558aeeee9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470016/normal_5fe483c1bd216.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/dgfkhdI/84604266869.pdfIn PDF document text
    • http://adv-workshop.site/29952380682kvd4f.pdfIn PDF document text
    • http://xuvivok.22web.org/belmont_report_research_ethics.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/satuja/19316436105.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/wolilexotojawozoxedo.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/android_auto_app_for_iphone.pdfIn PDF document text
    • http://wanikokod.epizy.com/cake_serving_guide_party.pdfIn PDF document text
    • http://dagajevefud.epizy.com/petajogokexomuwo.pdfIn PDF document text
    • http://pawutewitozi.epizy.com/clabsi_cdc_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/auslogics_boostspeed_9_free.pdfIn PDF document text
    • http://kovawasokagi.epizy.com/flyff_mobile_guide.pdfIn PDF document text
    • http://badememaveg.rf.gd/ionic_bonds_practice_worksheet_answers.pdfIn PDF document text
    • http://gejepif.epizy.com/61575406870.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_off0000bc43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC43 5624 bytes
SHA-256: e224c84d3e6fb7890a0bba5f069838fe669d406f7567a358aa8d887c7916ffa0
font_01_sfnt_off0000cf77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF77 9468 bytes
SHA-256: dbda9318ec17173aaaf600c425caa373ca0e734179c790bde3bba0fd6ef5941e

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