Malicious PDF — malware analysis report

Static analysis result for SHA-256 2030f7c9247108ad…

MALICIOUS

PDF

88.7 KB Created: 2021-05-15 01:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 39decbafd88fc10d0b57c067882108f2 SHA-1: c1d5ba2142e5ca525d5f031890f6611ccabdac7a SHA-256: 2030f7c9247108ad3f2d897055e63e4963c9a027d4dd327427053e53a20918fb
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to a search query, and an external URI points to a suspicious domain. This suggests the document is designed to trick users into visiting a malicious site, potentially for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=how+do+i+reset+my+maytag+epic+z+washer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410204/normal_5fd1f1ac7adfc.pdfIn PDF document text
    • http://gelufose.scienceontheweb.net/kumuzemizoravilitedid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382790/normal_5feea859ba4c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424029/normal_5fe0ef8f3e347.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470960/normal_5fd974107415b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403429/normal_6066ee2b643ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482208/normal_604d47a464cb1.pdfIn PDF document text
    • http://lonemap.medianewsonline.com/kifux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383791/normal_6026fe307d40a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449000/normal_5fe43a582178e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5fe66ba61ee9f.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/diccionario_bblico_reina_valera_1960_gratis_para_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469351/normal_60528402a0608.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/bupesejirijejus/bhairava_dweepam_telugu_movie_songs_free.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/muwotinejibedaduludutow.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/66128095102.pdfIn PDF document text
    • http://bajupigirosinaf.atwebpages.com/the_selection_book_1.pdfIn PDF document text
    • http://rotufixijisadi.onlinewebshop.net/99467466718.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/a_series_of_unfortunate_events_book_1_chapter_summaries.pdfIn PDF document text
    • http://bemuvarewu.onlinewebshop.net/automotive_can_bus_system.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/9apps_2018_free.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000125d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x125D4 26320 bytes
SHA-256: 380df7b52c802bdbe1d6f1068be85257d078d12b7f3677dcdbc244333b04bb7b
font_00_sfnt_off0000eb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB38 5660 bytes
SHA-256: 83885759c4b6d31a22c3db4609ff999ea7f39848c1ae3b6594e2dc0658fa9514
font_01_sfnt_off0000fe6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6A 11560 bytes
SHA-256: d58cfe8c55ff4a9fb26b0c0e4ea89b60eede1e6bcfc79829ec3f848871cb5895

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