Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1cdcdd5ca3d68e…

MALICIOUS

PDF

66.9 KB Created: 2021-02-18 12:51:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6399b7d2608a5f6ebb82483af24f9a7d SHA-1: 786c3cabc7405411d04c69a3a5b4e72a9e42abdc SHA-256: 7e1cdcdd5ca3d68e89505e97ed4b9df5ba9cbb4a944e078ffcf372648d68ad34
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to watching a movie, likely intended to trick users into visiting the malicious URL.

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://maypoin.ru/strik?utm_term=how+to+watch+macbeth PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465924/normal_5fe7f74d8d9b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470979/normal_5fe4cb752dde2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463785/normal_5fcde1ea64c67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486742/normal_5fe3c0d9ea297.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416318/normal_5fdb5ffe77644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_600d9df8e2871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_601cc0ffaaa52.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/iiWKjfs/nasty_gal_promo_code_september_2020.pdfIn PDF document text
    • http://subeziti.22web.org/ponaxinemonewil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387702/normal_5fd1c0b25371a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ginisanekuxowo.epizy.com/losavaxuneduzofovu.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/icbc_singapore_branch_annual_report.pdfIn PDF document text
    • http://bogikamo.epizy.com/dureg.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/56390769191.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_off0000c7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D4 4928 bytes
SHA-256: be6e3540874dfb345ac1e7c0e871356e40572e413688ee9064b08dae561cd097
font_01_sfnt_off0000d886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD886 11164 bytes
SHA-256: 142504239e0942c78583aa418034dbc3366b19541b8b6f597ee65890441c1594