Malicious PDF — malware analysis report

Static analysis result for SHA-256 526ef981fd705e63…

MALICIOUS

PDF

69.6 KB Created: 2021-02-06 12:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fdef514b4d45e40207b7306edd87b685 SHA-1: ca0d5059bd1ebcfebe658a72a090344739412103 SHA-256: 526ef981fd705e63bb8785077ff530c42f80e4a0f1976fcdf2b76f8f5baa2cf7
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=austrian%20embassy%20dublin%20visa%20application%20form PDF link annotation
    • http://bbbbbbbbeeee.space/wumusazatinubovawiteh6cmk.pdfIn PDF document text
    • http://hackins.site/24600637582ma5mn.pdfIn PDF document text
    • https://ridimejaxokixis.weebly.com/uploads/1/3/5/3/135340331/wibafujadarafago.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/hfujhGW/tefulamal.pdfIn PDF document text
    • https://sirewuri.weebly.com/uploads/1/3/5/2/135298631/vididegeparutoj-kozuvojoxapezed-rasab-zasitinulavog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389101/normal_5fece953077d7.pdfIn PDF document text
    • https://cdn.sqhk.co/butexuvokufo/gdnLhjd/paycell_kart_ne_kadar_sok.pdfIn PDF document text
    • https://xubivotalo.weebly.com/uploads/1/3/0/7/130775972/mujinewibiki.pdfIn PDF document text
    • http://wosurijegu.22web.org/80564633208.pdfIn PDF document text
    • http://xbet1.fun/police_siren_sound_effect_free_download_wavy38b6.pdfIn PDF document text
    • https://xomaribimufad.weebly.com/uploads/1/3/1/1/131163516/nekida-buwimusaxul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumigetutiburu.epizy.com/android_sdk_build_tools_for_linux.pdfIn PDF document text
    • http://lalatotusawedo.epizy.com/rabarinaravasuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/xibuwanukesagufenemefo.pdfIn PDF document text
    • http://rupokabimizoju.rf.gd/94835768083.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_off0000d1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BE 5592 bytes
SHA-256: 90a76f57d6ccea2798c8e648b027fe459c4d1d9e184abbf2609ec00a3101b10b
font_01_sfnt_off0000e4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B5 10728 bytes
SHA-256: be8e36aceb94d3bfa869917866dd40aa2b53e740751f92bf0a3c6d2f9cb7087f