Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e120c733fed7219…

MALICIOUS

PDF

73.4 KB Created: 2021-04-01 01:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f13679de01802ce4eab4c6d0d44ab19d SHA-1: fa70e40e2a3198e560cfcf27b4f5c70fd263734f SHA-256: 3e120c733fed72190a4720407917f9902879ddce39f16244c88faf63f576ed88
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by both ML classification and ClamAV as malicious. The document body is heavily obfuscated, but the presence of the external URI suggests an attempt to redirect the user to a phishing or malware distribution site. The ML classifier output of 0.999592 strongly indicates malicious intent.

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://bologen.ru/wix?keyword=pcl3+lewis+structure+resonance
    • https://cdn-cms.f-static.net/uploads/4443326/normal_603289691c0a5.pdf
    • http://itabody.space/direct_and_indirect_characterization_worksheet_answers4k6y0.pdf
    • http://it50disconto.info/miravezajusexahzzvo.pdf
    • http://1-bog.ru/inspiron_3847_memoryt516t.pdf
    • http://honey-love.ru/grade_12_economics_textbook_ethiopiahzx5r.pdf
    • http://vseti.life/real_madrid_vs_bayern_highlights_2018mwv4k.pdf
    • http://kawlites.online/google_search_history_delete_kaise_kare7kmb3.pdf
    • http://azorocheat6.xyz/ark_survival_evolved_dododex_oviraptorcf4ix.pdf
    • https://cdn-cms.f-static.net/uploads/4404297/normal_6056efdf5ada8.pdf
    • http://9gusevshop.website/52215743285cxwrh.pdf
    • http://citruss.space/xugumukigiduzola126x8.pdf
    • http://promooffer.site/voditedajo36c4f.pdf
    • https://cdn-cms.f-static.net/uploads/4501989/normal_6031b9bb6307b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b147a2f3-58af-4013-9def-597e86e94513.filesusr.com/ugd/47d6bb_8250934f88314bb89fd5e9fc3e5fc1ac.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7ced7ea4-6a84-4e65-99fa-0cf5928823e5/lujumavotufemofuru.pdf
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_26b7b1c734d64d74ab05d203ea9ddb60.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fcfbea4a-ef1b-4987-b2d6-16826fd357b6/xijulevopixi.pdf
    • https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_1117f460e1374f12bc02222fab990d22.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9996afe2-c60d-4192-94da-63f84686ae05/angles_in_triangles_worksheets.pdf
    • https://6c8ebe11-725c-420b-823a-68bc39d02ad2.filesusr.com/ugd/3e87bf_9ac725413a1d48f4b685b13d533299cb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bb81d797-e7fc-413d-a2cc-e9ad3df98736/como_falar_bem_em_pblico.pdf
    • https://uploads.strikinglycdn.com/files/f058248f-15b5-4cb2-8259-9ab1f0aab42c/how_to_get_the_best_fuel_mileage_out_of_a_5.9_cummins.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e19f.bin
3c6e851d84daf00bae76c7cb63f9ef04a9bee6c7dc15801c644947ef31b0dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE19F 5048 bytes
font_01_sfnt_off0000f2eb.bin
4bc00c0a4ff351ac3c6fe50972d9b9f791b7a7a0ee9dd040c07600c1c987c72f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EB 10436 bytes

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