Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a40794b2fedd9e…

MALICIOUS

PDF

85.6 KB Created: 2021-01-21 05:14:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 818aaf1258f4e73d3a48e2bc4cf73e5d SHA-1: 1a82906521c281afa59d53d5dd310017e72fb492 SHA-256: 12a40794b2fedd9e7d8d0b980c4311e10b68876126337c5f4e57ccfe2d21c025
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/aws?utm_term=magisterium+ko%25C5%259Bcio%25C5%2582a+pdf PDF link annotation
    • https://site-1172574.mozfiles.com/files/1172574/informal_letter_spm_visit_malaysia.pdfIn PDF document text
    • https://site-1178514.mozfiles.com/files/1178514/ararara_dj_marathi_song.pdfIn PDF document text
    • http://jijufik.22web.org/minuet_in_g_js_bach.pdfIn PDF document text
    • http://wimazosuwoxugij.66ghz.com/ma_sociology_notes_in_marathi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387230/normal_5f8daa8f24e82.pdfIn PDF document text
    • https://site-1177077.mozfiles.com/files/1177077/kagodum.pdfIn PDF document text
    • https://keladita.weebly.com/uploads/1/3/0/7/130739570/telemit.pdfIn PDF document text
    • http://xazufajemexeb.22web.org/counter_strike_1._6_windows_7_free.pdfIn PDF document text
    • https://site-1193936.mozfiles.com/files/1193936/ufc_results_last_night_ferguson.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wepuwuzuvam.epizy.com/backup_photos_and_videos_from_android.pdfIn PDF document text
    • http://mevedokepovi.epizy.com/zipuni.pdfIn PDF document text
    • http://gozotonitiki.epizy.com/51111581716.pdfIn PDF document text
    • http://dojopugoput.epizy.com/moment_format_leading_zero.pdfIn PDF document text
    • http://kujafugakare.epizy.com/network_speed_indicator_android_oreo.pdfIn PDF document text
    • http://folijurojavagig.epizy.com/nibesamewumebevafadi.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_off00010db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB7 5772 bytes
SHA-256: 5eb921f754880ef098ca335d4a109d4bca0be191893047200da0fde2334e9c84
font_01_sfnt_off000120ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120EE 12644 bytes
SHA-256: dfeabd8c9284bc105cc723239d810d289b1d24c00d1b2bf2c961f65471845996