Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa4ac8d7b7c0481…

MALICIOUS

PDF

67.3 KB Created: 2021-01-23 19:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ec67e62cc7b3635ae7a331cafca134b7 SHA-1: 97db82fe18ac0db03237a88717cfd8ad30f5ad17 SHA-256: 5fa4ac8d7b7c048100a97e8edec123bc397f3863de17cd97ea5edcf44f752199
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://maypoin.ru/123?utm_term=minecraft+mod+1.8+9+animated+player PDF link annotation
    • https://cdn.sqhk.co/togareguko/ejcIOjY/asterix_and_friends_cheats.pdfIn PDF document text
    • http://julapekawej.22web.org/aidetek_vc97_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/bezedono/njeBHha/onedrive_for_business_mac_cannot_login.pdfIn PDF document text
    • https://cdn.sqhk.co/kimefutif/cidhgdS/rugby_world_cup_2019_live.pdfIn PDF document text
    • https://site-1171628.mozfiles.com/files/1171628/lecture_notes_apk_free_download.pdfIn PDF document text
    • https://site-1182839.mozfiles.com/files/1182839/43722462128.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/yIhdjhO/ibis_paint_x_per_mac.pdfIn PDF document text
    • http://tegogufe.22web.org/78823200909.pdfIn PDF document text
    • https://site-1237828.mozfiles.com/files/1237828/28559485763.pdfIn PDF document text
    • https://cdn.sqhk.co/xumirikebixo/9ii3hbu/zombs_royale_io_discord.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/cHidgfd/minecraft_villager_news_update.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buvodadixasiz.epizy.com/5e_fighter_warlock_guide.pdfIn PDF document text
    • http://pitikepaz.epizy.com/8341290893.pdfIn PDF document text
    • http://susebuxusebug.epizy.com/zasov.pdfIn PDF document text
    • http://xojesenokok.epizy.com/7489894291.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_off0000c85a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC85A 5664 bytes
SHA-256: 483c19fcc910554d6f0f3fa10e6100f337293078352719a0dc75406ab326bd05
font_01_sfnt_off0000dbb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB0 10716 bytes
SHA-256: 5176ae6bb44fd5f2435b5b5dc610900ec3b67b8131c2b40588675d4173b62aad