Malicious PDF — malware analysis report

Static analysis result for SHA-256 f970b094ccd3787b…

MALICIOUS

PDF

78.4 KB Created: 2021-03-16 08:25:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d8f1d856cb845d31fd8d3aabbf96852 SHA-1: 1a40015132586fd985fde67037758d9067922ad5 SHA-256: f970b094ccd3787b9b3b6cb97824af084a6463cd8e914393a4dc1a12d7b43b92
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to 'search engine optimization definition pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://mezovuduw.ru/award?keyword=search+engine+optimization+definition+pdf
    • http://merishwheelrecords.com/126525844181phlp.pdf
    • https://vifiboreb.weebly.com/uploads/1/3/5/3/135349596/3ce67971a.pdf
    • https://navanelesud.weebly.com/uploads/1/3/0/9/130969746/tazoremidadosabaxav.pdf
    • http://ketosimple.online/java_8_for_androidrjshl.pdf
    • http://vivekawiga.sportsontheweb.net/9611413825.pdf
    • http://wabiferofuvud.mygamesonline.org/kasisutiziwipawora.pdf
    • http://baliferifopiz.mypressonline.com/lg_washing_machine_top_load_filter_cleaning.pdf
    • https://cdn-cms.f-static.net/uploads/4463830/normal_6033c9b74a030.pdf
    • http://lubevos.scienceontheweb.net/61286643413.pdf
    • http://madoxorijegobe.sportsontheweb.net/panurolin.pdf
    • http://bestpriceforukraine.xyz/yoga_101_poses_for_beginnersr508n.pdf
    • http://lapegokexixij.medianewsonline.com/juxewasilaviveda.pdf
    • http://freedate18.xyz/753485382000ny4m.pdf
    • https://jeziwirumefije.weebly.com/uploads/1/3/4/6/134670599/wifiz.pdf
    • https://cdn-cms.f-static.net/uploads/4408348/normal_605004317116b.pdf
    • https://cdn-cms.f-static.net/uploads/4455185/normal_60143bf9b04e4.pdf
    • http://zitokujamu.mypressonline.com/78242615721.pdf
    • http://xufelaketodo.getenjoyment.net/musab.pdf
    • http://thelait.pro/vobeselb0nuk.pdf
    • http://pifofobexaxel.mypressonline.com/atoms_form_bonds_with_one_another.pdf
    • http://tometifo.getenjoyment.net/human_geography_meaning_in_hindi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lafagelupuf.myartsonline.com/scott_pilgrim_vs_the_world_comic_color.pdf
    • http://pekafujojef.onlinewebshop.net/22587943359.pdf
    • http://vupaguriwedizid.atwebpages.com/pafuzewiruredap.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_off0000f3c7.bin
0ba5b349d707487dfa840afc9018dc5285d0884e894b7b00016af2cfa2916edf
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C7 5512 bytes
font_01_sfnt_off00010666.bin
e4dec68bb83794f967eb18195a31b4b8c0893be47ef0dbef4afec0e2c0aef2d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10666 10968 bytes