Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25ea72c926cf660…

MALICIOUS

PDF

69.6 KB Created: 2021-02-15 05:36:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b323249d4c8c94319048e5977eb5bf63 SHA-1: 9c0191750446897e7fb27c65678dc2325b72c9fe SHA-256: d25ea72c926cf660a252e0716e71c22d2135dddf736e1f985f2003e15b4bc6ad
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. The embedded URL suggests an attempt to trick the user into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9620

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/aws?utm_term=american+airlines+stewardess+uniforms
    • https://static.s123-cdn-static.com/uploads/4373259/normal_5ffdd59299f22.pdf
    • https://pejolufuti.weebly.com/uploads/1/3/4/0/134018137/mesesabi.pdf
    • https://static.s123-cdn-static.com/uploads/4393647/normal_600470a4d936a.pdf
    • https://cdn.sqhk.co/zipirevofu/tjeXhim/battles_of_the_ancient_world_game.pdf
    • https://cdn.sqhk.co/wazuvegox/bgcBpia/blackpink_lyrics_offline_app.pdf
    • https://static.s123-cdn-static.com/uploads/4393188/normal_5fd02ee33bc71.pdf
    • https://static.s123-cdn-static.com/uploads/4384463/normal_5ff2d296e8dad.pdf
    • https://gopaxabog.weebly.com/uploads/1/3/5/3/135309926/lafuvaxosagozigoba.pdf
    • https://cdn.sqhk.co/giwumazusew/xngdhbb/3948044045.pdf
    • https://static.s123-cdn-static.com/uploads/4386073/normal_5feb05c2785cc.pdf
    • https://cdn-cms.f-static.net/uploads/4421613/normal_60134b899c93f.pdf
    • https://static.s123-cdn-static.com/uploads/4411483/normal_5ff5346e8890c.pdf
    • https://cdn-cms.f-static.net/uploads/4414358/normal_601fd5572ac76.pdf
    • https://cdn.sqhk.co/reretukida/TOHY0kj/nofipevo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xakusineba/22391531504.pdf
    • https://s3.amazonaws.com/piwupevivotixi/mejorimenezarote.pdf
    • https://s3.amazonaws.com/tenunud/xebajub.pdf
    • https://s3.amazonaws.com/satuja/bruce_lee_movie_gv_prakash.pdf
    • https://s3.amazonaws.com/wovigebi/pruebas_liberadas_ser_bachiller.pdf
    • https://s3.amazonaws.com/tetofamuxulil/gimawunarupajebevuzusutuk.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4da.bin
4fc40565dc288d6e530b22fca9cc974a2ff346935496afb3e8e31e29de836e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DA 5132 bytes

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