Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d7833f97a4afb8…

MALICIOUS

PDF

41.0 KB Created: 2020-11-06 12:56:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ead2e18b33dc154826ae163a209222f SHA-1: 7bbf55efbed104a3367c01bc8e381140ed9eff0d SHA-256: 30d7833f97a4afb8c3eaf57474049ebe7aa857ebe9d59853702a68d893cc4566
94 Risk Score

Malware Insights

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

The PDF contains a link disguised as a download for 'Mi fit app for pc', which directs to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://traffmen.ru/strik?keyword=mi+fit+app+download+for+pc
    • https://cdn-cms.f-static.net/uploads/4372707/normal_5f94d00f619a4.pdf
    • https://cdn-cms.f-static.net/uploads/4457854/normal_5fa1a954eb3f6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gosete/collegiate_dictionary.pdf
    • https://uploads.strikinglycdn.com/files/f2baf752-f1c0-4f5c-9446-cc85c9d152cf/14407145373.pdf
    • https://s3.amazonaws.com/leributafa/87829224366.pdf
    • https://s3.amazonaws.com/jirebonudur/mujuremopad.pdf
    • https://s3.amazonaws.com/ditiruz/19623501704.pdf
    • https://s3.amazonaws.com/wokesabisevo/zinovixale.pdf
    • https://uploads.strikinglycdn.com/files/f94995d1-f1c5-42d6-89f6-71b3eef09064/67847259281.pdf
    • https://s3.amazonaws.com/baxekojojexusol/roxelisiwosado.pdf
    • https://uploads.strikinglycdn.com/files/9a133ee1-aad8-469e-ac81-1dc4486e8703/30454124992.pdf
    • https://uploads.strikinglycdn.com/files/16588a7c-4b91-4059-9a09-5a617cbe57fc/mikubizilasalexaxuru.pdf
    • https://s3.amazonaws.com/migivewuwe/sisinemejew.pdf
    • https://s3.amazonaws.com/rezugekolaba/wheelchair_basketball_drills.pdf
    • https://s3.amazonaws.com/ragejufa/lidekipumixizowoxu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006252.bin
0a9377f78aba9e444765f0293632807f916cc9b12f944b905ad0e848f5cf8744		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 5068 bytes
font_01_sfnt_off000073c5.bin
97f25be0b0e078cee0fb5d36932b22166c40216199a91df3611d2088a0961032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C5 10512 bytes

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