Malicious PDF — malware analysis report

Static analysis result for SHA-256 927fb716c897e321…

MALICIOUS

PDF

81.4 KB Created: 2020-12-15 12:25:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 239e809adc9b180497cc7a1bd5d8cbd4 SHA-1: 6d1ba90efe0610c696be81ed989630d78645227e SHA-256: 927fb716c897e32177fc25c9020b2f38a35d65d28600c13f04eee206bc9077be
96 Risk Score

Malware Insights

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

The PDF file contains a URL that is flagged as malicious and is presented with a lure related to 'Persona 5 Haru confidant unlock'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=persona+5+haru+confidant+unlock PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5fa4e82be1bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460055/normal_5fb64039c14a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489599/normal_5fadae1537a25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5f9b1f8a3bc3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457296/normal_5fa9ad647300c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5fd86edc61a6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_5fa6d7295b43b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463272/normal_5fc304472ae31.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/bef4b9d1-58f3-4fd9-999a-be7163199f8b/gezenavogogofedubeg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10afc403f5353fd968892/t/5fc4beba6457125654d161e6/1606729403214/57584943756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd2abe4b-3215-4dcd-8821-960814f8d6d0/8912592193.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a9a424b06a7eb327d53d/t/5fd64ed0e5ac5828961f8d06/1607880401164/free_video_compressor_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960b85bb-1630-4be9-b950-4d02850486fd/baluwamel.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5F 5300 bytes
SHA-256: 947925b4efb885c892d7e3cc2b5cb9e837f95b84db4826ef1f635173e9543bc0
font_01_sfnt_off0000fd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5F 10948 bytes
SHA-256: 71e49b74e7c23cf1ed3701d9f5bd85d45454c9a8284a1b95cd8aa09de0b20d70
font_02_sfnt_off000122be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122BE 16348 bytes
SHA-256: 7ea4ad8fabf58a022be5f422cdf71e1d18c834a5727f5ba12988ec6015bab3a1

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