Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d03bbf5e5885ec7…

MALICIOUS

PDF

214.9 KB Created: 2021-03-30 09:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b9500f543954a662f41af27f820b53ac SHA-1: c5312e41ad6d1ce691c0a38f58e31cf2b10bb37c SHA-256: 3d03bbf5e5885ec7acbe7771260e2c7100f9f86b6822a29c232f0eccfcdd5ade
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely to deliver a malicious payload or phish for information. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'urbanisasi' to entice users to click the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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/award?keyword=definisi+urbanisasi+pdf PDF link annotation
    • https://ramaxudefe.weebly.com/uploads/1/3/4/0/134042793/8696168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454803/normal_5fdc16488912d.pdfIn PDF document text
    • https://damanula.weebly.com/uploads/1/3/1/8/131856109/ganor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413575/normal_5fe12131b21bf.pdfIn PDF document text
    • http://lufatomitonad.22web.org/9126352647.pdfIn PDF document text
    • https://gabofulonu.weebly.com/uploads/1/3/4/7/134730366/93f9c.pdfIn PDF document text
    • https://lepifopinitomo.weebly.com/uploads/1/3/2/6/132696280/tajug.pdfIn PDF document text
    • http://bukobaxaz.getenjoyment.net/alemania_en_la_segunda_guerra_mundial.pdfIn PDF document text
    • https://cdn.sqhk.co/tixuniwe/hcjgBf0/zonakofowelepakub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409606/normal_600752ff5773f.pdfIn PDF document text
    • http://bozidik.22web.org/tony_little_gazelle_freestyle_pro.pdfIn PDF document text
    • https://geserani.weebly.com/uploads/1/3/4/3/134347405/rewumolelezijujipita.pdfIn PDF document text
    • https://valuzobuxile.weebly.com/uploads/1/3/2/7/132711949/e0619d48b6d76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452385/normal_6056e7f31b37c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428341/normal_5ff81c5171287.pdfIn PDF document text
    • https://vebudizegegogog.weebly.com/uploads/1/3/1/3/131398423/8feb6.pdfIn PDF document text
    • https://cdn.sqhk.co/mokabawimav/KVkijjh/techcrunch_disrupt_2019_berlin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://geforagegi.atwebpages.com/17589840782.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/anatomy_of_farm_animals.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off000332fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x332FB 17008 bytes
SHA-256: 223e2f8bde5acbb0957da1e56cb494b89dc63c645fd85f11ab6e098129c38e41
font_00_sfnt_off0002e6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6D0 5140 bytes
SHA-256: 687482ea94b025a1338c26a66a29c5a9c83f9ef1f0cf3d6de41f869e9ba3fd8b
font_01_sfnt_off0002f85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F85D 21460 bytes
SHA-256: f1e2182e5387290ac1ccd02622f2bb87a798c43cea1104a1d0f3941461623d78

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