Malicious PDF — malware analysis report

Static analysis result for SHA-256 f63866970ae4a8cc…

MALICIOUS

PDF

70.0 KB Created: 2021-02-25 15:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7fead3721f26ddd8e0ff6a1baccd4319 SHA-1: c4787c9f5825d740586262b667496352fe083056 SHA-256: f63866970ae4a8cc80f28119bd39a3a3f3929ec8f308a6b8c8ba64271420b336
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://jottigo.ru/award?keyword=kidde+kn-cosm-1b+recall PDF link annotation
    • http://dajexori.mypressonline.com/how_to_fix_a_clogged_badger_5_garbage_disposal.pdfIn PDF document text
    • http://a1metromovers.com/yojana_magazine_june_20198miaj.pdfIn PDF document text
    • http://studytogether.fun/linking_google_drive_to_wixi1aj1.pdfIn PDF document text
    • http://kismyketio.com/cmd_command_for_viewing_wifi_passwordkyffp.pdfIn PDF document text
    • https://ralixuviromod.weebly.com/uploads/1/3/5/3/135345966/mopoxana_volileli.pdfIn PDF document text
    • https://vufagejibuto.weebly.com/uploads/1/3/1/4/131483336/luzak.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/bejavopizabome.pdfIn PDF document text
    • https://cdn.sqhk.co/posogamumut/khdhaid/daxipefefatejiluvunug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rosajeku.myartsonline.com/why_has_my_chest_freezer_stopped_working.pdfIn PDF document text
    • http://bugenerefajujus.atwebpages.com/los_atributos_de_dios_aw_tozer.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/how_much_does_an_ekg_tech_make.pdfIn macro / runtime command snippet
    • 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_off0000d4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AB 5340 bytes
SHA-256: 22c6dc94d81696013a91adc2ffa984cf81840dcdc22b5e83d33acde333ff4670
font_01_sfnt_off0000e6c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C8 10824 bytes
SHA-256: 6d3f6fd6219e8a6dff0333dbed276768dbaa7eda92a8a5b2cf6d1de4d08eb5dc