Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5664a438ad9422…

MALICIOUS

PDF

109.2 KB Created: 2021-02-27 01:18:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e8dac70189b7d18ee8df1853ba79e10d SHA-1: feefc12383adff9d05585407fef865df299aa759 SHA-256: 9d5664a438ad94222da9efb68facaef870e713451e86511dca910ccdfb8d351c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'proofs using special angle pairs worksheet answers'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://jottigo.ru/strik?utm_term=proofs+using+special+angle+pairs+worksheet+answers PDF link annotation
    • http://optamorem.com/33580337253vjzme.pdfIn PDF document text
    • http://olipaka.xyz/pexatugatusol811d.pdfIn PDF document text
    • http://artdebug.site/deathrun_portable_mod_apk_2._6._3gfq2u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xojozefobulujox.epizy.com/gibbed_borderlands_2_save_editor_ps4.pdfIn PDF document text
    • http://zerujafulo.rf.gd/1559050774.pdfIn PDF document text
    • http://fewixedagixa.rf.gd/what_do_kidney_excrete.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/auriculares_inalambricos_sennheiser_rs_120_ii_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/dokovumozame.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/23664337062.pdfIn PDF document text
    • http://kuwubuvorij.rf.gd/bemanujimesofumidugus.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/rimimilapumag.pdfIn PDF document text
    • http://lolurisufetofel.epizy.com/pakemilekajuvigepaladinim.pdfIn PDF document text
    • http://revuzulikasulo.epizy.com/what_does_the_shattered_glass_symbolize_in_the_glass_menagerie.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E0 6704 bytes
SHA-256: 6c07c753364955eb7d697c065538e0725da12367c1b4d134fc31a8ca05bd6684
font_01_sfnt_off0001266b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1266B 5752 bytes
SHA-256: 04c0d5cdfff224d294855a5025f7d7cad69448c85c276fd3f5758c92c6335f22
font_02_sfnt_off00013a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A36 5432 bytes
SHA-256: 52a5f1c077c1ba4bbe0dd9f9b873ee1b9bf3087d53951bd1dcbc213a145af5ae
font_03_sfnt_off00014cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CC0 15092 bytes
SHA-256: 9df8cc3284cef64211d5d4e92dd75a5cf2aa439783ed275c4296bcbaa4bf3d32
font_04_sfnt_off00017df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DF3 17004 bytes
SHA-256: 381869f41804000dcd4aaab52b2737e732ad249d933d7f85585dbc91b89c8eb5
font_05_sfnt_off00019698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19698 6048 bytes
SHA-256: 25ea80e711b3a924cdf1838da11ef99a8edfe0ee6951c039d1659dc69c354d90

Open this report in the interactive analyzer, or submit your own file for analysis.