Malicious PDF — malware analysis report

Static analysis result for SHA-256 832bc0385ea02c75…

MALICIOUS

PDF

78.1 KB Created: 2021-05-05 19:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19fdbc550e13e0edb4a80786de7904d2 SHA-1: 977efe4c8a982ac2f48432895d98bc760afbdd61 SHA-256: 832bc0385ea02c751868fea34b6bfd8988bcb0be08660e42463a9cddc73b6f25
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 intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the presence of the external URI and the high confidence scores suggest a phishing lure.

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://nipisod.ru/strik?utm_term=who+makes+pro+lawn+mowers
    • https://cdn.sqhk.co/vumuwilaj/jbzjeiV/hackerman_kung_fury_hd.pdf
    • http://cheapestshop.xyz/hoverboard_house_simulator_20193zb7y.pdf
    • https://cdn-cms.f-static.net/uploads/4495843/normal_6017381b1a3b7.pdf
    • http://kinoxca.xyz/petakipolakomewemotake4eavi.pdf
    • https://cdn-cms.f-static.net/uploads/4446045/normal_601ce005466ca.pdf
    • http://imkl-checker.com/feluporaboobx5n.pdf
    • https://cdn.sqhk.co/nixivezez/HBigfgC/ice_princess_2_cast.pdf
    • http://pubgucbayim.com/when_can_you_wear_your_army_uniform5sbsb.pdf
    • https://cdn.sqhk.co/fuwasokeg/5jcicvR/tech_go_launcher_ex_themes.pdf
    • http://samyog.ru/probability_on_numbers_worksheet_answer_keyk0iwu.pdf
    • https://cdn.sqhk.co/xawodoze/eX8if2m/suvalikexupib.pdf
    • https://static.s123-cdn-static.com/uploads/4379971/normal_5fd09b50b7d7b.pdf
    • http://help-feedback-amzn3.xyz/jovozinupojy156.pdf
    • http://zoomita.fun/jvc_kd-r320_wiring_diagraml9yw8.pdf
    • https://cdn.sqhk.co/mapexovebo/Sgh3e3z/8818759140.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/rogugagatuf/best_ebook_reader_app.pdf
    • https://s3.amazonaws.com/lowebemuwojiso/85199099862.pdf
    • https://uploads.strikinglycdn.com/files/0c214ff0-17dc-4b11-937e-1c0b5e3a6d6e/what_is_an_example_of_a_data_warehouse.pdf
    • https://uploads.strikinglycdn.com/files/12182b43-5658-47f0-882a-8a3023c11d12/shakespeare_sonnets_love.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_off0000e7a0.bin
18f6f4039997f8655fbb14ca382a6fede40afb0471ad774be15408a571e128ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A0 4888 bytes
font_01_sfnt_off0000f813.bin
e5c9d3ecda356d2c99e0f6ddc1566477cf41f4d82390c1a157c0619a6da8b569
pdf-font-stream PDF embedded font (sfnt) at offset 0xF813 10700 bytes
font_02_sfnt_off00011cad.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAD 4324 bytes