Malicious PDF — malware analysis report

Static analysis result for SHA-256 98b50d1cbd669de4…

MALICIOUS

PDF

76.0 KB Created: 2021-02-28 03:40:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fcf3dadf423fdf0d75e44ec2928f4dd9 SHA-1: 02329af817578b72e669c0f3a4f086caf3c0d332 SHA-256: 98b50d1cbd669de4d906a049cfadd3ccd4007660919f465ed220a790a32fa68e
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://midufefew.ru/award?keyword=how+many+pages+is+when+breath+becomes+air+book PDF link annotation
    • http://topcreditscore.info/20998916479zx5uo.pdfIn PDF document text
    • http://o-karte-kopilka.com/theory_of_relativity_and_time_dilation366rb.pdfIn PDF document text
    • https://cdn.sqhk.co/zimevegi/ghdgfji/voicemail_greetings_download.pdfIn PDF document text
    • http://ttop-shop.com/9337270829upxjr.pdfIn PDF document text
    • https://cdn.sqhk.co/buzovegom/82hfGeo/random_space_survival_simulator.pdfIn PDF document text
    • http://sfr-espace.best/42941066277r6pwa.pdfIn PDF document text
    • http://atlas-copco.su/seeleys_anatomy_and_physiology_ninth_editionj01s4.pdfIn PDF document text
    • http://shortsomfj.space/garrett_ultra_gta_1000_priceifgiw.pdfIn PDF document text
    • http://bilkan.fun/73117212054vd299.pdfIn PDF document text
    • https://cdn.sqhk.co/keviwebewuta/bgdggL7/jomolulunevexux.pdfIn PDF document text
    • http://fortuneocredit.com/zarebejenivagutogotlnyaz.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/jfhedVt/jufufoxagano.pdfIn PDF document text
    • http://drenajkrasnodar.ru/befedutaledoxowalzzta.pdfIn PDF document text
    • http://xtreme-sport.ru/semibofuwaxigozakurosawof44ivx.pdfIn PDF document text
    • http://fredo.bike/nursing_dictionary_offline_freeazkko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ecc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC3 5676 bytes
SHA-256: 9abcb8b7361fff8295c4b6e52738f056f54955b2bec9a96d12f5db1de6d7691e
font_01_sfnt_off0000fff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF9 10256 bytes
SHA-256: 5a52e34cc0c75160756a9797c6e99ec9838dae047eeb2c1657f7b085ad8a3711