Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f10ec13597b4d02…

MALICIOUS

PDF

81.8 KB Created: 2021-03-20 08:19:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f9b55b8869f53fb941b7881b626b2ed SHA-1: 7886f3a54272c3476c6889f34503c6f657b42002 SHA-256: 0f10ec13597b4d0207bbcf2157506d658c3a8ed548e7a0d3fd8091a4f26c3d22
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://seumenha.ru/wix?keyword=clf+function+matlab', suggesting a phishing or malware distribution lure. The presence of multiple embedded URLs further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=clf+function+matlab
    • https://zabojipenow.weebly.com/uploads/1/3/1/6/131636987/61f264da3.pdf
    • https://gawudizilox.weebly.com/uploads/1/3/5/3/135300959/7424047.pdf
    • https://cdn.sqhk.co/mugolino/h3ighfp/magic_piano_tiles_unblocked.pdf
    • https://taxurazuzar.weebly.com/uploads/1/3/4/0/134042721/cc734c2d.pdf
    • http://fexuvukenix.22web.org/algoritmi_informatica_clasa_a9a.pdf
    • https://cdn-cms.f-static.net/uploads/4424328/normal_601a776e8beb0.pdf
    • https://cdn-cms.f-static.net/uploads/4455907/normal_6054651cb4c38.pdf
    • https://xunitaminovo.weebly.com/uploads/1/3/5/3/135349323/jutofamulurum_ginunozemasikag.pdf
    • https://cdn-cms.f-static.net/uploads/4495855/normal_6048c3a68643e.pdf
    • https://cdn.sqhk.co/togodawexu/Qyij3ir/the_walking_dead_season_1_episode_2_dailymotion.pdf
    • https://cdn.sqhk.co/demexadol/cJjivjb/monster_dash_2019_results.pdf
    • http://botamasixijo.iblogger.org/juger.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2716bd39-ea5a-4be5-8251-0a6b5a714a5c/21893819050.pdf
    • http://wutukiruwis.rf.gd/calibration_of_ammeter_and_voltmeter_experiment.pdf
    • http://nimitijas.rf.gd/34020409387.pdf
    • https://uploads.strikinglycdn.com/files/187652ac-f6a2-4c6e-bbb2-6efec80912f5/2018_toyota_camry_hybrid_xle_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/a3d14aef-5f77-4ce1-abf0-0af2ddcb1e5d/78082407343.pdf
    • http://temefolix.epizy.com/the_girl_with_the_dragon_tattoo_2011_subtitles_english_2009.pdf
    • http://vojulemopo.epizy.com/appendix_a_apa_format.pdf
    • http://godidab.epizy.com/number_line_subtraction_worksheets_for_grade_1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f19d.bin
cb5c8c6405a97e289a1d37fd8f3fa0fb9a9e5cd02c3f475be668e5c7f8c23a8c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF19D 3312 bytes
font_01_sfnt_off0000fd7e.bin
b08e0558637eb75674abe8f8d1f90fe761c30f44a3d43dbf33116d20a9350e5c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7E 4796 bytes
font_02_sfnt_off00010dbf.bin
f1156f12ce9463f52cc7d0f11d4bb83e23cfe864ad7ca1579b97877a63bab93f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBF 13036 bytes