Malicious PDF — malware analysis report

Static analysis result for SHA-256 8981823718295493…

MALICIOUS

PDF

67.8 KB Created: 2020-12-21 02:39:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a8e7fe84128d5c0054b50a83d5f840bc SHA-1: f25040973642499897c130d52bce0018775022ba SHA-256: 898182371829549398b273a239b2fa4fee221f43931116a8f71c4cb9e9251036
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Island of adventure harry potter'. No scripts were extracted, but the presence of an external URI strongly indicates a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=island+of+adventure+harry+potter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453328/normal_5fa643d3a0ab4.pdfIn PDF document text
    • https://zexafufu.weebly.com/uploads/1/3/4/5/134510694/lamosepal.pdfIn PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/3d69778926.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418170/normal_5fdfda2bec7d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fd173126633c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/00aac7a9-c2aa-415c-b246-7ffa981f1791/3121919781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a79375cc-0bae-40e6-a258-a82fd6f6a584/figure_drawing_methods_for_artists.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf9e38cb11b25c09bc108/1606220259441/rusowiler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8960810-998f-4809-b832-c8dfb5c46616/54121508077.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc9da7ff99f865bfec24a0/t/5fdce48a387b1e151100ae71/1608311947166/audit_report_of_company_2019.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_off0000ccd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD4 5228 bytes
SHA-256: 81f50f3ef694978cbb3328877bbe104bbe528fc4a21c358ce2ffcf0b1f2b4fdb
font_01_sfnt_off0000dea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA5 10744 bytes
SHA-256: c64e05b92ae394b4d5e1a64ac92b68b41b03ee79ad580a04609955679cf58bb0