Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4ce4975adf5b004…

MALICIOUS

PDF

72.4 KB Created: 2020-12-23 01:08:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: dc398d26da625dc7b1ff9fda62dbebad SHA-1: b0b5fe7fe38cec6b0fdbba5fe30fb2394d2d2d9c SHA-256: c4ce4975adf5b00466b82ca39da624dc6c2700f562e7db0cc6bfa9d8e065e0ef
96 Risk Score

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 document body contains a URL that appears to be a lure related to 'Android auto set waze as default navigation'. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/aws?utm_term=android+auto+set+waze+as+default+navigation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5fb49a5233909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477400/normal_5fa6e45892095.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5f98bf1988f7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476758/normal_5fbe9141332ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451047/normal_5fdef36547b34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f870dd95ee50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459922/normal_5fd2fba8758fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460070/normal_5fe231ef9cdbb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc7b71bf140fc3aa58b6189/t/5fcc12b97ae85b53b27f5650/1607209659170/glowroad_logo_png.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d12c3dfdd95b60d4a66f/t/5fc32dc2f8cdb769c64b1692/1606626755473/91426379282.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/41793568473.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/24800167238.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd035a68bfc5186168c4c3/1606222682236/free_standing_fence_home_depot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2ff61e3-4388-4d7e-ad64-dab4937cf007/75733807576.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc149a6a3bf4b14ababd147/t/5fc84f54e21c7c679adf7a6e/1606963029188/92290864815.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0baa35687f52b6b804624/t/5fc2224d173fb5383bead1a2/1606558287600/najofelepavasevabovovuw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 5148 bytes
SHA-256: 4c5aa670a9b2ec5ed3e58c0b51160609ebaf9ae02a15c8ff2a037fa56e260e5b
font_01_sfnt_off0000e177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE177 10656 bytes
SHA-256: 4c60078daff130a81d8bb8c229ce4ef9e441e8bf133944fbdc38b7a8dd277f7b
font_02_sfnt_off000105f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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