Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ed200c0035813f…

MALICIOUS

PDF

71.3 KB Created: 2020-12-25 23:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f07e8158129860f49b905a6d70acc351 SHA-1: 3cad7342077ee46dcd68d4d24d498f9fed375c6e SHA-256: 48ed200c0035813ff94373f83d7daa326d9e4254bc050bb1f66fab480fa0b284
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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. The presence of an external URI pointing to 'trafffe.ru' and heuristic detections related to urgency lures suggest a phishing attempt. Although no scripts were explicitly extracted, the PDF structure and the nature of the URL indicate it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafffe.ru/aws?utm_term=anime+slayer+for+ios PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423772/normal_5fcbd0d7183d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455658/normal_5fa17d121ab79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419433/normal_5fc3b07a060c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487386/normal_5faf286f124c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420597/normal_5fd9ad9c1ef7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420617/normal_5fdd8f4dae3e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378155/normal_5fcc67ad2e7b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f928472ef666.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f87c63d691df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367960/normal_5fe570443b182.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423732/normal_5fbe66b05a211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413707/normal_5fb994df9d8b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418013/normal_5fa749adbc630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5fa5d1adbe5df.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/ganubatebedoxez/brandy_song_true.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_off0000db34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB34 5004 bytes
SHA-256: 7e0018b1df8138ca904d375087c12c572847a426163d60b57ac72b45674ebf37
font_01_sfnt_off0000ec27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC27 10700 bytes
SHA-256: cd3001fb6dd2fa5a9aedf3e4af5b778186ae6c733c71916ce8d71ab122318f85

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