Malicious PDF — malware analysis report

Static analysis result for SHA-256 258aac5395dada23…

MALICIOUS

PDF

76.6 KB Created: 2021-03-21 22:12:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: abbb6ec169350e753b64a2f7a691e57e SHA-1: bdfb001da1239bc4950ba211bf307293b279b592 SHA-256: 258aac5395dada2300197a89d5392acb34880892fd1d9b1910ccf58d368ffc9b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. The document body contains text related to 'Chick fil a franchise application steps', and an embedded URL points to a suspicious domain that is likely part of a phishing campaign. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site.

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://jottigo.ru/strik?utm_term=chick+fil+a+franchise+application+steps PDF link annotation
    • https://cdn.sqhk.co/nizufalagef/jigglQg/ovilex_driving_school_sim_2020_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/GrhfgcT/xudofavidar.pdfIn PDF document text
    • http://somixewavado.sportsontheweb.net/dibodetazagitutoj.pdfIn PDF document text
    • http://galufixagomedo.getenjoyment.net/pimejudonajo.pdfIn PDF document text
    • http://makelemeg.mygamesonline.org/ispad_clinical_practice_consensus_guidelines_2020.pdfIn PDF document text
    • http://visonokug.22web.org/quiz_questions_topic_ideas.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/xeropizuwe/tewowodudu.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/canon_canoscan_lide_100_scanner_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/86870276659.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/biloretonojexun.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/kalvisolai_11_quarterly_answer_key_2018.pdfIn PDF document text
    • http://juwukopegonamu.onlinewebshop.net/clemastinum_aflofarm_ulotka.pdfIn PDF document text
    • http://kageditivumimor.onlinewebshop.net/clc_bricks_manufacturing_process.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/sikarimexa.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/best_ads_block_app_for_android.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/99863929949.pdfIn PDF document text
    • http://jadigilotuziwir.rf.gd/vitusasibotoxuwezagudilar.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/nowukuxalevokujoluwuguwo.pdfIn PDF document text
    • http://kipudube.rf.gd/65728995053.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/html_footer_design_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/gitupidirulafulub.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_off0000efc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC2 5072 bytes
SHA-256: 6da2622f1f4142e384f837caf791acac7fba3096a4c145e878a6438de6aa63df
font_01_sfnt_off000100fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FE 10588 bytes
SHA-256: 32d90223f5dcd1165b04ec0c75df6a1d3fb9f74a0cf4842e1ae5592114978edc

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