Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf5baeab593306b…

MALICIOUS

PDF

85.8 KB Created: 2021-03-15 13:19:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1560cd7080d2323fcff773677558c057 SHA-1: 0e36e01702ab1e0ffa602c1d052dd02803986c28 SHA-256: 3bf5baeab593306b8346584304fc5030b61ee8f41c7c45b981c9da5a14073334
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to 'Bible translation comparison chart'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/strik?utm_term=bible+translation+comparison+chart
    • http://kewisanoxiv.66ghz.com/retexuvevaw.pdf
    • https://cdn-cms.f-static.net/uploads/4403270/normal_604328c70737c.pdf
    • https://cdn-cms.f-static.net/uploads/4464873/normal_601f42f2b8a2e.pdf
    • http://fusitekive.iblogger.org/36130091578.pdf
    • https://static.s123-cdn-static.com/uploads/4462093/normal_5ff8b59bd6b87.pdf
    • https://cdn.sqhk.co/vuveleni/hf6vjjE/video_voice_changer_fx_mod.pdf
    • https://static.s123-cdn-static.com/uploads/4412181/normal_5ff0874544194.pdf
    • https://cdn.sqhk.co/tomubozes/aigLDii/34670464010.pdf
    • https://static.s123-cdn-static.com/uploads/4470400/normal_5ff75c8b70584.pdf
    • https://cdn-cms.f-static.net/uploads/4495686/normal_600ed7556ac88.pdf
    • https://cdn-cms.f-static.net/uploads/4484999/normal_60222c08f2f8b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://9c43cb74-45e3-47de-9527-fda2e8336169.filesusr.com/ugd/af0aa9_208fb05cb4504471b8e6c6af7a6712e3.pdf?index=true
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_cf5b2868a626468194ccd60ce9058b41.pdf?index=true
    • http://jadupapobixe.epizy.com/zaziwegisipimoredoganisof.pdf
    • https://uploads.strikinglycdn.com/files/04788753-8267-4aa9-b445-6bb19125ddaa/4134837321.pdf
    • https://uploads.strikinglycdn.com/files/bbcf6ea9-ec6e-4fdb-bc98-c4a993d8c4ed/35199443806.pdf
    • http://sapovupiz.rf.gd/kujinivikemakow.pdf
    • https://50fe66f1-00be-429c-ab6c-57a9f80d6ab9.filesusr.com/ugd/39cb9d_5ada388d7dc847d196afad3de1b1f93c.pdf?index=true
    • https://d2d110b1-dce0-4b0c-bed7-be24280b7a6e.filesusr.com/ugd/165585_19dbd56fcfb549c58c6ad012068dd338.pdf?index=true
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_3ffa22710e064b1e8dc72c8b53c7592b.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_off000104c8.bin
f0f52445a571c228359af394617f4c2f86371e070dfabd5d57a98a0192f01074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C8 5148 bytes
font_01_sfnt_off00011601.bin
fe15386774d1ee9e8c169f34e6fd6299fd13c1c4c70a55b4507d8283b0deb6bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11601 11068 bytes
font_02_sfnt_off00013b61.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B61 4324 bytes

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