Malicious PDF — malware analysis report

Static analysis result for SHA-256 e02caac7a0405712…

MALICIOUS

PDF

208.3 KB Created: 2021-03-18 13:19:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a17299665e742b296301e070d334b57f SHA-1: a9977f0f9d078c77ff8adff0c793a95c9d5cacf8 SHA-256: e02caac7a0405712c4ce571e87be593f3b672279ebdf59af44f3e21bfbbb00b9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely to serve a secondary payload or phishing content. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or trojan delivery mechanism. No scripts were extracted, but the presence of an external URI points to a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://jacksth.ru/wix?keyword=minecraft+coloring+book+free
    • https://static.s123-cdn-static.com/uploads/4403130/normal_5ff942b94f650.pdf
    • https://cdn.sqhk.co/gijosevozu/gjwENjc/hidden_stickers_on_snapchat.pdf
    • https://cdn-cms.f-static.net/uploads/4386349/normal_6052efdb56819.pdf
    • https://static.s123-cdn-static.com/uploads/4411686/normal_6005b68253fc7.pdf
    • https://cdn-cms.f-static.net/uploads/4414860/normal_603c0db89708a.pdf
    • https://cdn-cms.f-static.net/uploads/4448733/normal_604f75ff121e0.pdf
    • https://cdn-cms.f-static.net/uploads/4501654/normal_600f12f52b2fd.pdf
    • https://cdn-cms.f-static.net/uploads/4487632/normal_601c8c7daf38b.pdf
    • https://cdn-cms.f-static.net/uploads/4493209/normal_600a10f54f27d.pdf
    • https://cdn.sqhk.co/midijanere/dLfngY0/luzelokovutugakulinuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jasipefulaxiduj/58203352247.pdf
    • https://s3.amazonaws.com/muvevanepen/graco_magnum_x7_parts_breakdown.pdf
    • https://s3.amazonaws.com/topipovikapari/8356995777.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/muxudonitororiwi.pdf
    • https://s3.amazonaws.com/vufupu/menatonegel.pdf
    • https://s3.amazonaws.com/vedexajawo/90992636347.pdf
    • https://s3.amazonaws.com/rorives/nubisugorib.pdf
    • https://s3.amazonaws.com/jotogorurekuro/amazon_alexa_app_android_tv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c0.bin
deab9a20049b34dd9aed8a084b56885e24b275c87e2253e0a05ecb13f953d635
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C0 175876 bytes
font_01_sfnt_off0002fc32.bin
b332f88e5b1652ced2ae4229c864cd776878f1dd4e791b05384ebf96cd43a1f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC32 5080 bytes
font_02_sfnt_off00030da2.bin
a219d4b07546ec99a8b98398d28aab06778f7483c2949479d104de956cc9a4ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x30DA2 10652 bytes