Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc6a6c2fc37d6b6a…

MALICIOUS

PDF

74.6 KB Created: 2021-02-24 07:04:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d896f9c82078c29974faf76241e92a97 SHA-1: 2ba36b51002c37d9754dd94b08476b96f921106b SHA-256: bc6a6c2fc37d6b6afb791369bfe0012486583135781dea0d8e597b9dc37663a4
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://crophysi.ru/aws?utm_term=comptia+security%252B+guide+to+network+security+fundamentals+5th+edition+by+mark+ciampa+pdf In PDF document text
    • http://segwaywheelchair.ru/tewezenugogusibop53yg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452861/normal_5fefb976aba87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505102/normal_5ff227bf382cd.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/udchggj/best_music_player_2020_windows.pdfIn PDF document text
    • http://macsk.space/iron_man_android_game_freecz1yq.pdfIn PDF document text
    • http://feelslike35.com/weather_forecast_weather_live_weather_widgetsatjt6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446633/normal_6010aae3e2253.pdfIn PDF document text
    • http://zofanelo.22web.org/belkin_n600_modem_router_manual.pdfIn PDF document text
    • http://unosital.space/zopuwuduvijomowawowagitwrps.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedifi/T73jev5/jigiga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gulibekesewek.epizy.com/jutoz.pdfIn PDF document text
    • http://dodarululi.epizy.com/microsoft_word_organizational_chart_template_free.pdfIn PDF document text
    • http://jofanemapax.epizy.com/badupaz.pdfIn PDF document text
    • http://vebavibokifoko.epizy.com/dersu_uzala.pdfIn PDF document text
    • http://topasirerawo.rf.gd/99539424472.pdfIn PDF document text
    • http://tujevudaxuxos.epizy.com/atualizao_azbox_bravissimo_twin_transformado_setembro_2019.pdfIn PDF document text
    • http://towupew.epizy.com/vampire_diaries_season_1_episode_10_watch_online_free.pdfIn PDF document text
    • http://gozulejawefufap.epizy.com/spotify_premium_apk_mod_offline.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_off0000e1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D8 5996 bytes
SHA-256: 2e397985e6a5a3c3d96d4a2540aff14ff9c31f2f37a3087d5ec4daa35bf9e2d8
font_01_sfnt_off0000f62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62E 11380 bytes
SHA-256: 45d9d85015a358ac226d0c226b2cc21e6c3d428784ab6610d47e6456b5394384