Malicious PDF — malware analysis report

Static analysis result for SHA-256 43759344a19c989b…

MALICIOUS

PDF

72.6 KB Created: 2021-02-25 10:46:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9d484482e133f8be1710c2746186416d SHA-1: 8388ee3d094e1c96671e1ef2035445d46eb7e9ae SHA-256: 43759344a19c989b394450ae0bc3a666ad9ebc73ea0837387d4cdde9147465e1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/award?keyword=will+in+sharia+law PDF link annotation
    • https://bixedonaxube.weebly.com/uploads/1/3/4/6/134619794/fd5a6bcf.pdfIn PDF document text
    • https://ruzamugube.weebly.com/uploads/1/3/4/0/134040566/gupak.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/guwemurelabuneposomukeli.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/79350146787.pdfIn PDF document text
    • https://cdn.sqhk.co/xesagomi/jiiijjD/60940040798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464068/normal_5fd324a5e3263.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/En3Cmhe/vijeboxejovagi.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/jaicNjf/ivory_ella_soccer_sweatshirt.pdfIn PDF document text
    • http://fojowufuzuno.22web.org/bigbasket_app_for_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/jaicNjIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mosasawimip.epizy.com/allergic_rhinitis_diagnosis_guidelines.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/frankenstein_de_mary_shelley_film_streaming.pdfIn PDF document text
    • http://wimifus.rf.gd/zujegesu.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/how_to_be_totally_miserable.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/how_to_do_wave_curls_with_flat_iron.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_off0000e2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FC 4880 bytes
SHA-256: 67167016e522be9b13e8a939e0d6ff033f2b67e43d213b65c2d4ffe17b6de2f4
font_01_sfnt_off0000f39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39E 10032 bytes
SHA-256: 5ee67b83935a1f11d44ba5cb22d2df274e88a69711a3420a5c45312444f06557