Malicious PDF — malware analysis report

Static analysis result for SHA-256 098fdb0cd2782001…

MALICIOUS

PDF

72.7 KB Created: 2021-02-25 10:29:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 545a2f3aff7d6b3a34f6cdd36e94744a SHA-1: 65334c444e279fb3d957f3bc1519c5a1c22e91b2 SHA-256: 098fdb0cd278200173527f0a4d65261aaeb7a9e866586d18045022efc3658d2b
186 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wb?keyword=how%20to%20write%20a%205%20paragraph%20essay%20outline PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494429/normal_60079a202bc72.pdfIn PDF document text
    • http://vseti.life/mxq_pro_amlogic_s905_4k_tv_box_firmware_updatelijaa.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/gchmDgj/best_rock_songs_about_losing_a_loved_one.pdfIn PDF document text
    • http://firstsecu-paypal.com/calculus_bc_formula_sheetcfxzu.pdfIn PDF document text
    • http://webdefilmizle.com/5164911309d0cef.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/m5TidS5/game_launcher_samsung_tab_a.pdfIn PDF document text
    • https://fixabugodorev.weebly.com/uploads/1/3/1/8/131856934/puwiwiti-pupivedupefixew-ronamemabi.pdfIn PDF document text
    • http://com-signto5.xyz/flight_of_the_conchords_season_2_watch_online_freezvqx8.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/ijaijij/best_free_fake_call_apps.pdfIn PDF document text
    • http://savadaqwe.space/1998_cam_vintage_camera_premium_apkwgcti.pdfIn PDF document text
    • http://kellys.space/airtime_load_up_applicationaw8g6.pdfIn PDF document text
    • https://gakezepatirana.weebly.com/uploads/1/3/2/7/132712251/3532529.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/T1WiEsW/vubugu.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/leributafa/postcard_address_format_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/cursive_writing_worksheets_capital_letters.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_off0000e02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02A 5360 bytes
SHA-256: bb2f4f7612c1f8fb97c1b3c07d17a7a33d31746e73dfa2e0765969a00cd6c548
font_01_sfnt_off0000f275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF275 10332 bytes
SHA-256: 40200f140557e36091d6536a11f85ab40a63c37afea9b74787ae4289009da06d