Malicious PDF — malware analysis report

Static analysis result for SHA-256 5921832e827a1baa…

MALICIOUS

PDF

70.0 KB Created: 2021-03-30 19:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: cbc924c2338cee2c33d3bcab06e184af SHA-1: 15538e4e6626b15d128c52d9949c8889da8e0f67 SHA-256: 5921832e827a1baad649a12be0ab9d187485f1fabf5b31ae9750153fd3dfa028
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, likely intended to redirect the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'Xfinity remote control programming codes' to entice clicks on 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=xfinity+remote+control+programming+codes PDF link annotation
    • https://cdn.sqhk.co/kibizatududo/igdBRji/kajivelebonufazaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403413/normal_5fdb906481ca5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428329/normal_5fdd24db87d4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446166/normal_6025057d9e4a0.pdfIn PDF document text
    • https://cdn.sqhk.co/runenuti/fjgYiiA/define_skew_in_hypermesh.pdfIn PDF document text
    • http://getyourscore.info/fivozuwuzaxivoxafixlraai.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408593/normal_603b53efd77ae.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/AjcwEij/grand_prix_story_2_mod_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472216/normal_60013bad2c54a.pdfIn PDF document text
    • https://cdn.sqhk.co/mesafovojifo/cgfhhRq/angry_birds_2_zeta_daughter.pdfIn PDF document text
    • https://cdn.sqhk.co/muxaferamet/2KMsiFd/33246396672.pdfIn PDF document text
    • https://cdn.sqhk.co/miwizawi/hijdWje/firememukemixuviko.pdfIn PDF document text
    • http://podarokinsta365.site/62167685089b05l0.pdfIn PDF document text
    • https://cdn.sqhk.co/menodotitit/jeggKij/tiktok_mashup_november_2020_1_hour.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527345/normal_5fdea063db1c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/29b94b09-820d-4ff9-a608-22ee0645ada0/dd_3.5_warlock_handbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a53bad95-621a-4c01-bf19-75f2593c6107/aircraft_engineer_salary_per_month.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99aaf1bf-11b0-4325-9369-8f0cbcf12435/who_manufactures_snap_on_torque_wrenches.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F7 5552 bytes
SHA-256: 06878a144c00968dbb68b85cd5216d6889e5684e0253c7cf201dea6095b87811
font_01_sfnt_off0000e8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D0 9988 bytes
SHA-256: 65a5f28817544c68fde7e13a92344370d9137b3cfd9db5b57c721e63913a8c0d

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