Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc83a896b6619c40…

MALICIOUS

PDF

79.3 KB Created: 2021-02-28 04:53:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7fb71731ce0e3148dfbe13df31485b3e SHA-1: 568afabb0e6ed57fbec5e465400d425938b8b357 SHA-256: bc83a896b6619c40f36c73cd10bfbfe6b3412c1dd85cbecf4ecc259e42a15dc2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely to host a phishing page or download further malware. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. The document body, though heavily obfuscated, contains text related to "Misery stephen king character analysis", suggesting a lure to entice users to click the malicious link.

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://mezovuduw.ru/strik?utm_term=misery+stephen+king+character+analysis PDF link annotation
    • https://cdn.sqhk.co/zubavagi/ixVjauu/xonenegizegijulipetigepuk.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/jiKiaV1/dudorunujazikilowe.pdfIn PDF document text
    • http://gelumagiz.iblogger.org/how_to_calculate_yield_to_maturity_of_a_bond_in_excel.pdfIn PDF document text
    • http://wozonos.22web.org/69340653974.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/ZNjbijd/gaxewimubi.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/migivewuwe/lelozevukizujowakupusar.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/32009533146.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/32045869397.pdfIn PDF document text
    • http://mifasujabad.epizy.com/best_english_translation_book.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/51410815705.pdfIn PDF document text
    • http://semabuxof.rf.gd/frank_zane_training.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/cayson_collins_scouting_report.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/71997233621.pdfIn PDF document text
    • http://vimozav.epizy.com/burned_tower_guide.pdfIn PDF document text
    • http://vegozuw.epizy.com/motion_to_dismiss_with_prejudice_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/mazutogumotivadudep.pdfIn PDF document text
    • http://lafonariki.rf.gd/milady_chapter_15_study_guide_answers.pdfIn PDF document text
    • http://wixesikive.epizy.com/tigamisuxabowekerosizuxix.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_off0000ece0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE0 5044 bytes
SHA-256: 5fac01e6d9ee74a1c95426e41ea3de164fbec242d3dc09dee73081e93a6d6397
font_01_sfnt_off0000fe01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE01 10624 bytes
SHA-256: 5bbe97af67dd1141558b327320d61e2d7ea4d498f07c1a41d72d2c50bea59e38
font_02_sfnt_off0001220b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1220B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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