Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8c95b855d9d264…

MALICIOUS

PDF

68.5 KB Created: 2021-02-14 18:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5077f0965e8de608a7e67a249ee025dc SHA-1: ff5afafc73ef8cf890be8eb8ef338036f3738eb2 SHA-256: fe8c95b855d9d264f91efdecf28adf39d3ae0aa2d7882d0bd324a0a65bd0c2d3
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://yafferge.ru/wix?keyword=5+grade+study+links+answer+key In PDF document text
    • http://hustlinmoney.com/banco_bradesco_bic_codec5aj6.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/PDvKji6/commander_collection_green_premium.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/ja7Thic/vabifadeturodagoja.pdfIn PDF document text
    • http://smartycredit.info/django_website_templates_freek9qxb.pdfIn PDF document text
    • https://nuxajitavira.weebly.com/uploads/1/3/1/8/131871558/217e6ce5262a3.pdfIn PDF document text
    • https://kopigipovivon.weebly.com/uploads/1/3/1/4/131484029/f2c5683.pdfIn PDF document text
    • http://toppiksnack.xyz/the_black_keys_lonely_boy_tabag5lo.pdfIn PDF document text
    • http://navaram.online/9965332294xepzl.pdfIn PDF document text
    • http://detonic-buy.website/101648445891pxbr.pdfIn PDF document text
    • http://walkover.me/free_printable_heart_coloring_pages_for_adultsbjupg.pdfIn PDF document text
    • http://tegor.xyz/pixillion_registration_code88gk5.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/iicpjgP/12086964065.pdfIn PDF document text
    • https://cdn.sqhk.co/pulizojiwim/ckuEtq0/instagram_followers_increase_app_apk_download.pdfIn PDF document text
    • http://all-casino.xyz/cake_decorating_lessons_online2qpp6.pdfIn PDF document text
    • http://idem-peshkom.ru/86701129640kf6hz.pdfIn PDF document text
    • https://takewozijofu.weebly.com/uploads/1/3/2/6/132682119/2701423.pdfIn PDF document text
    • http://frankkyko.com/79029369119wda6t.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/kgg3nY7/baby_skins_for_minecraft_pe_downloadable.pdfIn PDF document text
    • https://tubuzitobez.weebly.com/uploads/1/3/4/1/134108618/335ce.pdfIn PDF document text
    • http://about-central.com/cribbage_board_template_metal7y82b.pdfIn PDF document text
    • http://tryplafond.xyz/jetebaxajszcim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bigagapafobari.rf.gd/bootstrap_templates_for_portfolio.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_off0000d068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD068 5280 bytes
SHA-256: 41fbb0673c4d39d1a52df64177d273dd847647d719824fea515d662ffab37923
font_01_sfnt_off0000e281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE281 10000 bytes
SHA-256: 642faf01fa565a4d5aac3723fc3c9d896f9c638b4eb6b9be5dfad0e588b94747