Malicious PDF — malware analysis report

Static analysis result for SHA-256 108dc9b573da29b7…

MALICIOUS

PDF

78.0 KB Created: 2021-03-13 18:25:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 6b930adbd8c9fb85d624b98963a38c53 SHA-1: 378cac706b01c6cad340ee92259558e16962fc6a SHA-256: 108dc9b573da29b74ce9a097d83d57a4bad542bfc9630e2552af7b223b27b8e2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a domain that appears to be a lure for free Joomla templates. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to the malicious URL, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://kuzutuzo.ru/123?utm_term=free+joomla+quickstart+templates PDF link annotation
    • http://vuzuwul.getenjoyment.net/samsung_tv_ir_sensor_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/xilasexiki/fvgcDEh/zoratolugosinuzarazo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401692/normal_5ff7853c3681b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446286/normal_5fcd3150e2200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505820/normal_600a7279da036.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386593/normal_5ff6a9256dbca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454684/normal_6044dc7656c20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402501/normal_5fe74e787379a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_6012633521044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402488/normal_5feaf6a88c2da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470688/normal_6008a60a2f575.pdfIn PDF document text
    • http://pubofumoxo.scienceontheweb.net/zulejapupalosagike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477137/normal_600b3efe87801.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/7EiekyE/chris_stapleton_album_song_list.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/aiheIie/infinite_pads_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/vuranataxu/hgicigF/gozerixuxoxekisavevomuvut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499651/normal_5fd96e0073070.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484355/normal_5fdf0b9e588d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378621/normal_5ff8c5bfb68b5.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/eduardo_galeano_memory_of_fire.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487186/normal_5fee661f1c7b0.pdfIn PDF document text
    • https://cdn.sqhk.co/lupokuna/igjZ4gd/98413167374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427509/normal_5febd4527465c.pdfIn PDF document text
    • https://cdn.sqhk.co/gojelonub/OegcEXl/tagekunukidefekozavapaxo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://piwakitidi.onlinewebshop.net/wuvazarevijaselinaxeraba.pdfIn PDF document text
    • http://lamupimifuban.onlinewebshop.net/wavote.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_off0000f19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19D 5300 bytes
SHA-256: 05d9fc31bce0833a973f7bbc95fa582626a20e913234d1efee8c95d7714e5262
font_01_sfnt_off00010397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10397 11008 bytes
SHA-256: 713d7ed70260860173c8fa88961787e1c686171016a4c74c95bdccec6a4cd514

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