Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ec1ca96559d81c…

MALICIOUS

PDF

87.2 KB Created: 2021-02-15 22:50:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 71b4241881eb55095168983a10b97531 SHA-1: b67fc9ae476ae1775f249f05ce8ffe46a7e61274 SHA-256: 22ec1ca96559d81c630d8530e942ed8939fd24b20bdbda81dd1789065f35f85a
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, which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to financial analysis, further supporting the phishing pretext. No scripts were extracted, but the presence of malicious URLs indicates an attempt to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=amazon+financial+analysis+2017+pdf PDF link annotation
    • http://afracheat8.xyz/jedi_academy_no_cd_crackmw0wv.pdfIn PDF document text
    • http://tiktokhd.design/917871293141zjj4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493920/normal_5fe0f27ca5bf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475872/normal_5ff9be369bdfa.pdfIn PDF document text
    • http://vehicleusains.com/12156038404wv8b7.pdfIn PDF document text
    • http://udilische.club/vida_y_muerte_en_la_mara_salvatruchaqo1ai.pdfIn PDF document text
    • http://mamajan.space/wefizapurertgaju.pdfIn PDF document text
    • http://cesaregaspari.com/4270081496m8w0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502563/normal_5fd1e38da1030.pdfIn PDF document text
    • http://discount50it.pro/xxxuy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453550/normal_600edbb17be03.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://s3.amazonaws.com/forupokisip/android_stock_phone_app_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/2015_chevy_impala_limited_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/chrome_for_linux_16._04.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/50541772382.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_off00010796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10796 5344 bytes
SHA-256: 4bbdd9198180d341cab4e1ee709d38f080e93da9f8fb31c6926563b3a7e41064
font_01_sfnt_off000119b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119B4 12132 bytes
SHA-256: 19ed655ecb4101f1c98c555fdc5762adfb26ae260d951620b7bebf8e998bdc87
font_02_sfnt_off000141aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141AA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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