Malicious PDF — malware analysis report

Static analysis result for SHA-256 391b62c4ef0c0324…

MALICIOUS

PDF

73.6 KB Created: 2021-01-29 03:03:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5c02ff7721d43325f4b42e6da7438d49 SHA-1: ea0e4f60ac743e20998a80040a4de6ed09cf094f SHA-256: 391b62c4ef0c032448cf61f7240578950761e411557c1e549043814065b3e425
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wb?keyword=xiaomi%20mi%20a1%20launcher%20apk%20download PDF link annotation
    • http://trellos.fun/buried_gianto4cpk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fe271c1a1b93.pdfIn PDF document text
    • http://help-verification.com/60006840987mp72z.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/phaehTA/43043816486.pdfIn PDF document text
    • https://cdn.sqhk.co/fidumugovoz/id7ifnH/highwaymen_band_dvd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421959/normal_5fe42a1ea37b7.pdfIn PDF document text
    • https://cdn.sqhk.co/xobanozizesa/uZahioy/craftsman_new_homes.pdfIn PDF document text
    • http://rewita.fun/womamamibewuxuxesonarufusfknw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456687/normal_6007aac0558c7.pdfIn PDF document text
    • http://xupenoxerukaj.22web.org/49858921598.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/e2jgiay/87477518983.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466413/normal_5fce3332e2da1.pdfIn PDF document text
    • https://cdn.sqhk.co/dujepiwewi/icjaScq/lugagutowunezumonuz.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/ggRigas/wajupubemideza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sisuvoxodukon.epizy.com/bawonesubofar.pdfIn PDF document text
    • http://naremijex.epizy.com/formal_apology_letter_for_delayed_response.pdfIn PDF document text
    • http://zumaruzafomadik.rf.gd/45950272987.pdfIn PDF document text
    • http://fodabobaxuti.epizy.com/spotify_mod_premium_apk_latest.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_off0000e08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 5320 bytes
SHA-256: 8441e1398954c2042d22f5020fd64e1520e0f4f71b2123f26b9031af3933c308
font_01_sfnt_off0000f28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28A 11340 bytes
SHA-256: a85c73381af397f5353fcc26d1bc0be5ad944b22d078e1b897e650ee661d9233