Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff1ce2e6e860464…

MALICIOUS

PDF

71.2 KB Created: 2021-02-16 11:24:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 915fd7738413e2162251a1252dbbab2e SHA-1: 55025ae12b3ed480c7f4fd1ebd84a562d2e53552 SHA-256: 0ff1ce2e6e8604645fa6b2590b819f0273cb788da319a41231a22ebec01a0f11
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL likely leads to a second-stage payload or phishing page, aiming to compromise the user.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/123?utm_term=how+to+make+a+banana+smoothie+with+yogurt+and+milk In PDF document text
    • https://cdn.sqhk.co/mewedenemez/i2jjjd8/zekodaguzudazupow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fdd95d941ab2.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/cievibD/correct_score_betting_tips_daily_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/ipggUgd/34221332930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_5fe72829c8151.pdfIn PDF document text
    • https://cdn.sqhk.co/xamowizaso/ujghggc/4631202183.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481155/normal_6004068b9c21d.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/jajcqjb/ketetixoxalumijafuvuze.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/zufaxepixiguxax/88933491186.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/abrasive_water_jet_machining_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/fiwaberojovoletosanagos.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/brooklyn_99_tv_series.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/tigesavololisotezewe.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/75769849026.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/gamukadexetuta.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/escalation_protocol_loot_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/sheet_magnifier_for_sale.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_off0000cc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC39 5480 bytes
SHA-256: 57cd21ce8105b52b47706fcc931caa457266d997203a440a0d7d3d971db09a1b
font_01_sfnt_off0000deb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB6 10116 bytes
SHA-256: 95925b985e039683bd7687d32922d00548a1d4f581b9a894326bfbc509f75b92
font_02_sfnt_off00010158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10158 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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