Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7197453ffa64563…

MALICIOUS

PDF

64.9 KB Created: 2021-04-30 05:28:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9c5b7f6baca507a644246c9fd5b7de6 SHA-1: 6ad5e5bb1757b1bac6248bad8f57a8421bee882b SHA-256: a7197453ffa64563b51345f42759648efe136c5407c86f51c45b8ba2e1c712bc
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, 'pelibifir.ru', which is likely used to serve a malicious payload or conduct phishing. The document body, though heavily obfuscated, contains text related to 'La divina comedia dante libro completo', suggesting a lure to trick users into visiting the malicious URL.

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://pelibifir.ru/strik?utm_term=la+divina+comedia+dante+libro+completo
    • https://cdn.sqhk.co/noperizapewo/ifZ9Ju4/free_ringtones_rock_and_roll.pdf
    • http://cmbclientes.com/how_to_get_rid_of_medial_epicondylitisu6z2d.pdf
    • https://cdn.sqhk.co/mepetiruzi/ZicJahg/light_em_up_up_up_pitch_perfect.pdf
    • https://cdn.sqhk.co/lewoxiguj/NOcQgcP/kaxuga.pdf
    • https://cdn.sqhk.co/xudekutof/Kjgpgqa/briova_sodium_hyaluronate_enrollment_form.pdf
    • http://sbrf.link/jivajumonuken45jae.pdf
    • http://fuxofexafot.iblogger.org/sosawujuxamofizisugosari.pdf
    • http://dfwshootersupply.com/legend_video_editor_mod_apkkg79w.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rebokomixuxoj.epizy.com/batla_house_movie_tamilrockers.pdf
    • https://e8e87dc5-637d-47ba-9de6-e7d98d123d78.filesusr.com/ugd/a69a03_9c54d0972fd14ce6be14d8930f1fabe0.pdf?index=true
    • https://s3.amazonaws.com/ropidadegaxut/wipiziwubudisemotoxan.pdf
    • http://reduxaxu.epizy.com/dr_malinga_shebeleza_remix.pdf
    • https://s3.amazonaws.com/bokelur/tuval.pdf
    • http://mufifofoge.epizy.com/febrile_neutropenia_idsa_guidelines_ppt.pdf
    • http://jutekezas.rf.gd/ahmet_hamdi_tanpnar_kitaplar.pdf
    • http://gogewarixisude.epizy.com/didesadajikuzobumabufo.pdf
    • https://s3.amazonaws.com/vufuzewasi/sulphur_springs_weather_report.pdf
    • https://5c06e36d-e6a7-492f-989e-88f86e9ca1b1.filesusr.com/ugd/c9ae65_8ade88474870438f8c7d57c167c333df.pdf?index=true
    • https://d201025a-8123-4af6-bbd3-513b73e26e51.filesusr.com/ugd/a64c8c_d107ec5915bd4e0f848adbd76d4cb6fa.pdf?index=true
    • https://s3.amazonaws.com/rodakarugupoko/matematicas_financieras_frank_ayres_descargar.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_off0000c400.bin
65d755e752605a6209f650ef7bbb43e346813142317006efe3c7deadf434cb09
pdf-font-stream PDF embedded font (sfnt) at offset 0xC400 5180 bytes
font_01_sfnt_off0000d58a.bin
0df011fc0eb86e82feee014627c3cde3bcff75a3d9251ca93feecffa8972992e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD58A 9744 bytes