Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cde7e556eeece57…

MALICIOUS

PDF

75.2 KB Created: 2021-03-10 21:07:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 510a4e0c24b0177a0f0a342f4901e995 SHA-1: d3d53c5677bf82d2f3c52fd808e2e2af9690f5e6 SHA-256: 2cde7e556eeece578251b3fcddcf256a596d2f3216ef8a8e8766c1138fcad209
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, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, suggests a lure related to educational content, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=naming+acids+worksheet+answers+pogil
    • http://profapp.pro/does_chick_fil_a_have_20_piece_nuggetsqi8pa.pdf
    • http://poxumanavofeboz.scienceontheweb.net/sanunuzolomanejimezerub.pdf
    • https://cdn-cms.f-static.net/uploads/4413368/normal_6038d557ce4aa.pdf
    • http://portkamesto.site/690974322727nrk2.pdf
    • https://serirufudo.weebly.com/uploads/1/3/4/7/134712976/4725666.pdf
    • https://tidukefawa.weebly.com/uploads/1/3/4/8/134851120/c63a0.pdf
    • https://static.s123-cdn-static.com/uploads/4445877/normal_6006556ab8022.pdf
    • https://cdn-cms.f-static.net/uploads/4457320/normal_60333c2432bd1.pdf
    • https://xijiruxexewige.weebly.com/uploads/1/3/4/7/134725886/4710491.pdf
    • http://serviceforyou.site/kabilenimefagob7vz4e.pdf
    • https://burevojaziji.weebly.com/uploads/1/3/4/7/134729690/249e6705c9e8fa2.pdf
    • http://rezexepenoma.scienceontheweb.net/88344127138.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cf4de027-7369-46c2-bf93-d69cabef2b5e.filesusr.com/ugd/868b90_dbe9d363c4c84fc6b6eaf4c83b349e9e.pdf?index=true
    • http://pilejifizodan.onlinewebshop.net/27134843238.pdf
    • https://s3.amazonaws.com/sezebepit/how_to_regenerate_a_water_softener.pdf
    • https://s3.amazonaws.com/daniwodug/jibapugawawemawufinebogeg.pdf
    • https://s3.amazonaws.com/tozaduliwubega/wuxevodanunupim.pdf
    • https://b4095e1f-5e43-4c35-8b28-ff0c3185c247.filesusr.com/ugd/9cc3de_9d2b6414e1804366bda2dc7ca5d7aba4.pdf?index=true
    • http://sabiwilurase.atwebpages.com/nasutu.pdf
    • https://s3.amazonaws.com/jujadodedaruxix/3557070779.pdf
    • https://4eb83289-b313-4542-b68c-79a1d4783db4.filesusr.com/ugd/f6336d_d26dde47e4424f9eb1a67de7722e64d3.pdf?index=true
    • 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_off0000e03b.bin
55f918d4aaf81035ba67253a67a55b7cd35e2bc382879c20c67551ded4e9fc9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE03B 5612 bytes
font_01_sfnt_off0000f339.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF339 1800 bytes
font_02_sfnt_off0000fbc7.bin
b87ddb0c2ea5cfc9eb5ce4f7183a34d8d01b38b27dd94c6f530890131bb3a8e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC7 10156 bytes

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