Malicious PDF — malware analysis report

Static analysis result for SHA-256 7823cc1c567c4774…

MALICIOUS

PDF

70.0 KB Created: 2021-02-16 12:01:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0eb6761708b163cc5c0fa52c8eb0a68a SHA-1: e28cf865589dd5f770d5d29ad83c3228d1c45423 SHA-256: 7823cc1c567c4774fa878b7674291efbaa83b2f74b9d3501b7c22fc0f89986f8
184 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
  • 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/wb?keyword=crossfire%20wargame%20miniatures In PDF document text
    • http://hackins.site/biblia_dios_habla_hoy_con_deuterocanonicosmvpdc.pdfIn PDF document text
    • http://expo-kit.ru/zotijumowunb7rbx.pdfIn PDF document text
    • http://getbuiss.online/pavosewekiloruri6h60.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/PPjfjjh/radioactive_movie_cast.pdfIn PDF document text
    • http://fullstacket.online/like_app_download_jio_phone_me_mp3gvhs8.pdfIn PDF document text
    • http://ital-girl.space/tanovuriuaoj0.pdfIn PDF document text
    • https://cdn.sqhk.co/posogamumut/ULhbgjA/miwefuzepetak.pdfIn PDF document text
    • http://pshcomonhere.xyz/add_song_lyrics_to_instagram_story_androidollo4.pdfIn PDF document text
    • http://sibuvre.com/dbrau_exam_date_sheet_2020ewivt.pdfIn PDF document text
    • http://smartradiobf.ru/total_quality_management_principles_and_toolskeq6q.pdfIn PDF document text
    • http://apkweb.net/3279552113069q6k.pdfIn PDF document text
    • http://monoga.space/simple_present_reading_comprehension_exercisesdzqcq.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/iceland_guided_tours_2019zsz74.pdfIn PDF document text
    • https://cdn.sqhk.co/rijunawep/hhLfEgi/xumiwumoxuxasamepuwuxupi.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/tevigotu/tenor_banjo_chords.pdfIn PDF document text
    • https://discord.gg/W3N4CW8AJYGermany:TanksIn 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_off0000d418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD418 5052 bytes
SHA-256: 46c32438772585c5519bdba3d0b00ba97e202ac70e7860e98fdc0f686e4e8166
font_01_sfnt_off0000e549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE549 11192 bytes
SHA-256: 015a3a609f761fe460def9d1f7c1c0b0ee759a4ce047d91d3c709aa10958b2c8