Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4440ce1eb31baa…

MALICIOUS

PDF

67.8 KB Created: 2020-12-17 21:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4b43df8d27038f61831ff0bd85606ace SHA-1: 72ea73faa51ad5b58086eeac009f7b06b907472c SHA-256: fe4440ce1eb31baaa075db958538fff16181147633fdf64f866d1f1be04e20f5
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely to trick users into visiting a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high probability of phishing or malware delivery. No scripts were extracted, but the presence of external URIs suggests a potential for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=watch+hannah+montana+online+free+dailymotion PDF link annotation
    • https://lifexusubanipi.weebly.com/uploads/1/3/4/3/134377686/5407440.pdfIn PDF document text
    • https://nilowebun.weebly.com/uploads/1/3/4/7/134751503/temipasufurupil-xamapameturobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471484/normal_5fd128703de0c.pdfIn PDF document text
    • https://sorasewemo.weebly.com/uploads/1/3/4/3/134358680/tuwup-sitosewadiz-xeluruz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427085/normal_5f9a819669fd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460460/normal_5fa81a61db827.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/xaliwalufoguni/bteb_routine_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a952dcc1-2ea9-4f13-8328-2aeaa549591c/swiftstandards_mt_message_reference_guides.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe39a861e25426e10465a4/1606302122033/check_if_key_present_in_dictionary_python.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4f0d68ef7301f8b2ad9db/t/5fd066d5fc93c51d16ddeedd/1607493333944/vipakuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7413178a-1f90-4a8a-ab87-fefe79a8286f/13021181353.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_off0000cdc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC6 5196 bytes
SHA-256: 305514e88dd49cb5622a06a47a371c6dbab27ca17b96560ba67b30a0c9815b94
font_01_sfnt_off0000df5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5F 10240 bytes
SHA-256: 6dab6b0e929029ebcf2e97ff0edf9d884409807cd34e282136111231080adfe2