Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aada241af63e73b…

MALICIOUS

PDF

74.9 KB Created: 2021-02-15 19:38:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 79e436c2a544c4ead95913e4f74f28cf SHA-1: 4e21be89759562aaab60213e939f97f44c93e9ed SHA-256: 7aada241af63e73b0eaf999b247c9a2c08db718be5792133ad86fc139874ad0f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that appears to be a download lure for 'tubemate 2.2.4 free download 2019'. ClamAV detection and ML classification strongly indicate maliciousness, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to the embedded URI, reinforcing the phishing lure.

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://jottigo.ru/wix?keyword=tubemate+2.2.4+free+download+2019 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402960/normal_5fde62f1954e5.pdfIn PDF document text
    • http://stalekost.site/automobile_parts_and_functionslwj4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413975/normal_601854b312b6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407306/normal_5fe0977de2697.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457881/normal_60222a310e468.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392658/normal_600648628703e.pdfIn PDF document text
    • http://noverst.xyz/wujezasin2lj6t.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
    • http://migusopugaj.epizy.com/change_background_template_powerpoint_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/dajepopixevadelafurud.pdfIn PDF document text
    • http://magivaxinel.rf.gd/adobe_photoshop_cs6_extended_direct_link.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_off0000db01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB01 5492 bytes
SHA-256: 07f17f1c217cf1b3e66e2dc61e5715fb645539fda177e18f6190ea8fd45d927f
font_01_sfnt_off0000edb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB6 10328 bytes
SHA-256: cadbc3fd5c801f6b586a6c6d411ffdd2572b03887c5b2394600b35bc033e6326
font_02_sfnt_off00011104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11104 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f