Malicious PDF — malware analysis report

Static analysis result for SHA-256 0436ea7f2b9408d2…

MALICIOUS

PDF

85.0 KB Created: 2021-03-29 18:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e35735541d84ec801e3c8626ade1ae15 SHA-1: 270f3706e61b679ef47a4e1cad563f2294bbbb85 SHA-256: 0436ea7f2b9408d2938b6a3d134476428a0bbdd40f2265a168855874fbd6f579
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a URL associated with phishing content, disguised as a search result for a repair manual. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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=2004+hyundai+santa+fe+repair+manual
    • http://mizejodaf.mywebcommunity.org/2209062093.pdf
    • https://cdn.sqhk.co/pigevikuwi/bijLhfE/zegototanerop.pdf
    • http://arendagg.xyz/rerobefebawamon8lo2.pdf
    • https://cdn.sqhk.co/salipini/giigc8O/69294416599.pdf
    • http://kefijor.mygamesonline.org/48869672308.pdf
    • https://cdn.sqhk.co/wogokodu/hjhjfOB/modesto_weather_now.pdf
    • http://zoguponuwuxoli.medianewsonline.com/eucalyptus_camaldulensis_medicinal_uses.pdf
    • https://buralekareze.weebly.com/uploads/1/3/4/3/134326789/33c0d8.pdf
    • http://uspeh.icu/what_are_the_elements_of_photographyhx5eu.pdf
    • http://runolive.com/adjustment_letter_format_examplebshky.pdf
    • http://zukixulen.mypressonline.com/90468696492.pdf
    • https://boseveju.weebly.com/uploads/1/3/4/5/134595203/7790bc532ca55.pdf
    • https://fakanodadix.weebly.com/uploads/1/3/4/3/134371587/mubaridifujo.pdf
    • http://vumogegotawugub.mypressonline.com/75753511224.pdf
    • http://tryporte.xyz/bosebogimuvabov58dpe.pdf
    • https://xonedapu.weebly.com/uploads/1/3/4/6/134654428/jusuguzafa_xorewebis.pdf
    • http://volalagokiva.sportsontheweb.net/black_and_decker_mega_mouse_sandpaper.pdf
    • http://netewe9.xyz/kaplan_pathology_questionsewrk3.pdf
    • http://mamefumiwuto.mywebcommunity.org/9194134575.pdf
    • https://cdn.sqhk.co/luwagoma/CziigjM/email_distribution_list_template_excel.pdf
    • https://sogazefod.weebly.com/uploads/1/3/4/0/134000298/piditowelobuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sirilagewuga/who_are_the_main_characters_in_romeo_and_juliet_act_3.pdf
    • http://diwadakerinepix.myartsonline.com/ashwin_sanghi_books.pdf
    • https://s3.amazonaws.com/loranoduzuja/do_toyota_camrys_have_transmission_problems.pdf
    • https://s3.amazonaws.com/muvazi/hath_chumne_punjabi_song_status.pdf
    • https://s3.amazonaws.com/kavalukato/33956837204.pdf
    • http://fidikaxano.myartsonline.com/demezugawokuz.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_off00010cb4.bin
d9b0962f36e8c8c061e0badefad11ba9458135cadded15a991888e3f394db1d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB4 5652 bytes
font_01_sfnt_off00011fce.bin
e458f796fe81f62493d14e9a7d9ffc91b806a8dd73b9635bb310e0fe35847a3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FCE 11300 bytes