Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c34712a8a03f96d…

MALICIOUS

PDF

95.9 KB Created: 2021-04-07 03:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ad3d80c47f40c30a12c6038949f4628 SHA-1: 7a7e8719901f5f5637d066dab74b9295beef3bca SHA-256: 9c34712a8a03f96d748e48c09b9bc3b034f91b7dd2881d2331b7bd90b1ec21e0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'botokaw.ru', which is likely part of a phishing lure to trick users into downloading further malicious content. The document body, though heavily obfuscated, contains text related to downloading a book, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://botokaw.ru/strik?utm_term=descargar+libro+el+principito+en+ingles+gratis
    • http://love-your-lips.online/gozimodosejuzamifanezukmljrs.pdf
    • http://kudusakepupa.sportsontheweb.net/ielts_essay_samples_band_7.pdf
    • http://sikevemekoma.mypressonline.com/cavendish_experiment.pdf
    • http://rolapisi.scienceontheweb.net/qualitative_test_for_carbohydrates_report.pdf
    • https://static.s123-cdn-static.com/uploads/4418590/normal_5ff26e4c02d34.pdf
    • https://static.s123-cdn-static.com/uploads/4445114/normal_5ff368afc5a4e.pdf
    • http://legendbilisim.com/vujimavoretoxodemaxig3dmxq.pdf
    • https://static.s123-cdn-static.com/uploads/4444374/normal_5fee168ed19a2.pdf
    • https://cdn-cms.f-static.net/uploads/4504568/normal_601fd1dfaa632.pdf
    • http://shmelev.pro/27445502156304p1.pdf
    • http://rivugijunamusi.mygamesonline.org/5th_grade_math_enrichment_worksheets.pdf
    • http://bbflowers.net/981805365087ge5v.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/8d2c8402-19aa-456d-9b0c-0a8ebdb2eff5/honeywell_quietset_fan_noise.pdf
    • https://uploads.strikinglycdn.com/files/2fc68d49-91f4-4170-94b3-88ce4d177ab1/92705081583.pdf
    • https://uploads.strikinglycdn.com/files/51fafadb-7b14-4b24-9ca4-f2ecedc9b142/what_does_a_branching_tree_diagram_show.pdf
    • http://jizuwugi.rf.gd/nonakidigagofujulewowunit.pdf
    • https://uploads.strikinglycdn.com/files/067d9a4f-3f41-4ba4-84b4-b65dfe4db246/22822821536.pdf
    • http://tadezaxe.rf.gd/parbolas_de_jesus_cairbar_schutel.pdf
    • http://limoxukuk.atwebpages.com/1250229218.pdf
    • http://rabelinowizufe.myartsonline.com/formation_windev_22.pdf
    • http://donijexufenu.onlinewebshop.net/lou_gehrig_full_speech.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb3a.bin
19fe6d3511270ee3ff4fbce704f5f4a9fb9182a4344e37e40a38d55828b07e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3A 3312 bytes
font_01_sfnt_off0001071b.bin
e771012a9e8083294e9ea57612330c3a5e78067bb3937230112472c436a535c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1071B 5028 bytes
font_02_sfnt_off00011839.bin
68a06f09b572a6985974870be1cd933908e9cb5a6b67abe7253a35623d1406ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11839 14476 bytes
font_03_sfnt_off000144e4.bin
b1707352acab7dde4c418a346ff9b6e97343c1677a663d256d5266193b049239		 pdf-font-stream PDF embedded font (sfnt) at offset 0x144E4 18104 bytes
font_04_sfnt_off000160e8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160E8 4324 bytes

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