Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcb0e10c236ce12…

MALICIOUS

PDF

76.2 KB Created: 2021-04-04 00:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc8706e664288a478c455eb49768e0c3 SHA-1: 2022a7a3681590bf2bff59388bcf53e6242caa68 SHA-256: 2bcb0e10c236ce12bd79a24a377b8949067d44ba143d6b269b9a10cc88ca3643
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect the user to a malicious site, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://dafemum.ru/strik?utm_term=how+to+check+license+status+south+carolina
    • http://pezejij.mygamesonline.org/vitagebiv.pdf
    • http://mikrotikwizard.com/1000978035y0c94.pdf
    • http://nanolenka.xyz/nalinirosobaku4g56u.pdf
    • http://vodabutopidaru.getenjoyment.net/losugufadebiribifujes.pdf
    • http://raguvigawak.mypressonline.com/ti_nspire_cx_ii_cas_user_guide.pdf
    • http://zovitidagawas.sportsontheweb.net/ecological_theory_in_social_work.pdf
    • https://static.s123-cdn-static.com/uploads/4500883/normal_5fdd5b5950f3d.pdf
    • http://tikovg.xyz/swahili_to_english_dictionary_bookbhnvz.pdf
    • https://static.s123-cdn-static.com/uploads/4416928/normal_600492cec606f.pdf
    • http://vukufitu.mywebcommunity.org/zofixupipuzasef.pdf
    • http://vuzuwul.getenjoyment.net/mowakafavisoz.pdf
    • http://datiwufirul.medianewsonline.com/60456576573.pdf
    • http://claire-irk.ru/sanokobazufizine2gjni.pdf
    • https://static.s123-cdn-static.com/uploads/4499351/normal_5fff2ebb516d1.pdf
    • https://cdn-cms.f-static.net/uploads/4420431/normal_60618988860de.pdf
    • http://potuxoposutu.medianewsonline.com/evermotion_archinteriors_vol_31.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b8f80d97-bafd-4b08-b859-9578d20dd5d7/dlink_2750u_as_repeater.pdf
    • https://uploads.strikinglycdn.com/files/d2a1287d-5e1d-4151-a4f6-277bd2936963/what_is_data_analysis_software_spss.pdf
    • https://uploads.strikinglycdn.com/files/88f46e42-d371-4cb9-98ff-f987d84bb698/download_contoh_surat_lamaran_pekerjaan.doc.pdf
    • https://uploads.strikinglycdn.com/files/943a63e4-b65f-4108-ae1c-4315fcf3e5e3/38009405289.pdf
    • http://sajulugebimisu.myartsonline.com/razoluxerudiwas.pdf
    • https://uploads.strikinglycdn.com/files/de8bb9f2-b7cd-4d1f-81f9-904c66515627/6301084871.pdf
    • https://uploads.strikinglycdn.com/files/3ec0b024-0c69-458f-9da1-e475f8a6922b/govatusepuzopupo.pdf
    • https://uploads.strikinglycdn.com/files/5a19c2d3-609a-4a04-a859-1edb3ea7dfb1/nijule.pdf
    • https://uploads.strikinglycdn.com/files/f00cfb3c-e6ff-4e83-8a5e-e1fcea0b42e3/6924136663.pdf
    • https://uploads.strikinglycdn.com/files/f2d70db6-6c7c-4bd6-9374-3a859f5b2683/94906805133.pdf
    • http://vumamuv.myartsonline.com/sixixusowoxisipugo.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_off0000ee2c.bin
300f97f5a70bbebbe9c6738d910cdbbc6a0714ecca30a6055983fa90656dc964		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2C 5004 bytes
font_01_sfnt_off0000ff38.bin
6a4b5dc95cd6a318beafbaa76544712ea00247c1c305a1d04c62fd8af7b9ea07		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF38 10480 bytes

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