Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ce2258c2f08e45…

MALICIOUS

PDF

70.5 KB Created: 2021-01-26 21:10:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 741324b0064ba9d974081f53e0b3d473 SHA-1: bfe4322f9597005eb318100b25d7db2d573e3d62 SHA-256: 39ce2258c2f08e450396a413abc5ecc253f69557933cd97a32fb35d59465a3ec
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/wb?keyword=digi%20malaysia%20customer%20service%20email PDF link annotation
    • https://cdn.sqhk.co/punipopi/ghiWRij/37601572907.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_5fd7b14c11dc0.pdfIn PDF document text
    • http://mavito.online/free_halloween_wallpaper_for_iphone_8_plusry033.pdfIn PDF document text
    • http://idealslimitalia-official.site/49394728199vqoym.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368758/normal_5ff2760f68fa4.pdfIn PDF document text
    • http://pressit.space/tugimedogelau7i7z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470826/normal_5fc74fffbd77a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378827/normal_5fd5f6e8bfbf9.pdfIn PDF document text
    • https://cdn.sqhk.co/rabuvimi/iehfnDn/play_island_tribe_4_online_free.pdfIn PDF document text
    • http://123dutch.com/802143088476rgur.pdfIn PDF document text
    • https://kunewosixur.weebly.com/uploads/1/3/4/3/134393142/lulaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485695/normal_600c12737e508.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/cambridge_young_learners_english_starters_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/a._i._sha_web_series.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/our_lady_s_abingdon_school_uniform.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_off0000d62f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62F 5280 bytes
SHA-256: 05f19d1631680fe4cf100af9b182295bec26eb90e3efbb45d94fcc6ec9793f89
font_01_sfnt_off0000e823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE823 10832 bytes
SHA-256: 003cd602d60ffd1c09fe5c672cc9c7c1b4d2dc89d5a917ef1fcc67be0d410985