Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dede1e73994a3c4…

MALICIOUS

PDF

67.4 KB Created: 2020-12-21 07:16:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c87e665ce575b8fb070232ae114a4de SHA-1: 74062d4a42b7c92ac95706101418394b4b677835 SHA-256: 1dede1e73994a3c4c00ef9fbe786bf47da3b13d90fb415c66ba54f784b573bef
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that redirects to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, appears to be related to the URL's theme, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?utm_term=playroom+decor+ideas+etsy
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5fa1a636876c6.pdf
    • https://cdn-cms.f-static.net/uploads/4486193/normal_5fd33336c0f72.pdf
    • https://cdn-cms.f-static.net/uploads/4402936/normal_5fa59539819ed.pdf
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f9e1dc5b4a69.pdf
    • https://cdn-cms.f-static.net/uploads/4443602/normal_5fd6783998b1c.pdf
    • https://cdn-cms.f-static.net/uploads/4451355/normal_5fae79abd45f3.pdf
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f87f43727611.pdf
    • https://static.s123-cdn-static.com/uploads/4466386/normal_5fdd949f295b8.pdf
    • https://cdn-cms.f-static.net/uploads/4405902/normal_5f97ec70229c6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/420bbab3-fad7-404d-878e-fc8627f60bea/netflix_original_series_like_virgin_river.pdf
    • https://s3.amazonaws.com/zemigiduwagafu/vujatagewipu.pdf
    • https://uploads.strikinglycdn.com/files/05dac877-55e7-4a68-b963-eb49c341f3bb/gijisotumixodivofaz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb81.bin
b475cd55010f9cc49f1d310392a17c9a0408094d43a477dc54ecb62bf7d6ecd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB81 5188 bytes
font_01_sfnt_off0000dd18.bin
8f4d3ddc059f3854a0d7c6cf39221b93e253b65c5092f414f9a93dfdf97aeb3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD18 10568 bytes

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