Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68c4b2d3b387c66…

MALICIOUS

PDF

77.3 KB Created: 2020-11-21 01:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b053208ab811bb098dab5009baa7f55c SHA-1: 11b8fa2e1b8998e1598ab094a47b4d0a78dc260a SHA-256: f68c4b2d3b387c66902bf8c69d2f4b03d9aedca14c022c73174ec6094df08be3
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which is associated with a phishing lure related to 'sift study guide test prep'. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=sift+study+guide+test+prep
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/732c295b5e6.pdf
    • https://poxedavuk.weebly.com/uploads/1/3/4/6/134608045/xasuledenotuduxufu.pdf
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5fadaae8e3847.pdf
    • https://cdn-cms.f-static.net/uploads/4387589/normal_5f93baf22a052.pdf
    • https://cdn-cms.f-static.net/uploads/4369486/normal_5f99683342b42.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jamokaroxoj/chordata_characteristics.pdf
    • https://s3.amazonaws.com/kelukakeb/13869123808.pdf
    • https://uploads.strikinglycdn.com/files/b29276f3-9967-4ec4-80ec-160b8078347e/tojijipan.pdf
    • https://uploads.strikinglycdn.com/files/8270c3b1-9b93-4cc6-8b80-9804c13dab8c/pes_2013_torrentle_indir_zamunda.pdf
    • https://s3.amazonaws.com/lijopavexanuse/harry_potter_always_shirt.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_off0000f1de.bin
6ed9da93e76dd72a5ed3749110fcd471f1ecc2d45c75a9ba9a5bfcefe13acfea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DE 5172 bytes
font_01_sfnt_off00010396.bin
f36987754bc22cf47e173b8dd9bae5402a9dd99b4c0f2d5475843df9ee11e863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10396 10900 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.