Malicious PDF — malware analysis report

Static analysis result for SHA-256 502f5d82cb4e6b45…

MALICIOUS

PDF

76.2 KB Created: 2021-01-25 08:43:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9d96730d34116867b845bdb7d1e89c24 SHA-1: 9ae4f6e349d7c24d0d3ff5c627390d191695e978 SHA-256: 502f5d82cb4e6b453077a357291f7a5e8ab4adb4644743987843805d783f9b0c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a malicious website. No scripts were extracted, but the presence of the external URI suggests an attempt to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wb?keyword=%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%20%D1%82%D1%83%D0%BC%D0%B0%D0%BD%201980%20%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5%D1%82%D1%8C%20%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD PDF link annotation
    • https://cdn.sqhk.co/kewesowovim/ijjcpPj/talking_animals_app_video.pdfIn PDF document text
    • http://videohost.space/badojokedefutkb4ba.pdfIn PDF document text
    • http://d2-club.ru/nuts_and_bolts_store_closing4iqu7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498978/normal_5ff508b11b459.pdfIn PDF document text
    • http://govnososal.xyz/rounded_corners_in_housercmml.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498404/normal_600c86bcc80c1.pdfIn PDF document text
    • http://uniques.space/30553285416tx4k4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501991/normal_6005747e86938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407299/normal_5fee1d61e5e9e.pdfIn PDF document text
    • http://idealica-ituficiale.website/75912287651hsqlm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472764/normal_5fee8c01e0953.pdfIn PDF document text
    • http://radanews.site/nelabamfjtt7.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/rezugekolaba/52183233313.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/como_aumentar_mi_testosterona_de_forma_natural.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/bihar_tet_form_apply_date.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/cdc_travel_information_mexico.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_off0000dcac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAC 6140 bytes
SHA-256: 5f14354355222ad0cfb46c2ad8b06f3fec089752ebb0f815dcf0370c2780fbdd
font_01_sfnt_off0000f115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF115 15652 bytes
SHA-256: 31f40aafe51fd1212f7714a43cf1db3b80ad28a3460f52032ab83df81b45ec0e

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