Malicious PDF — malware analysis report

Static analysis result for SHA-256 46eb6d59d47a1d3f…

MALICIOUS

PDF

84.7 KB Created: 2021-03-09 14:55:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: abba95d52a0e51a33346e36246b6b9fa SHA-1: 89f08fa0d39ab7c221afa1d76c37bd1cd890e0b4 SHA-256: 46eb6d59d47a1d3fe5f5b938345d2f7fc6839b8a7af60c5b360e71f979047c55
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to suspicious domains, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were extracted, the presence of numerous links to disposable hosting and redirectors suggests an attempt to funnel users to malicious content.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=how+to+write+a+letter+disputing+an+invoice In PDF document text
    • https://cdn-cms.f-static.net/uploads/4482618/normal_60418327662f1.pdfIn PDF document text
    • http://bettyloustintruckbbq.com/solve_quadratic_equations_by_factoring_ppt0x2mj.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/hiihLgn/37305963754.pdfIn PDF document text
    • https://cdn.sqhk.co/zubixola/hILZOhg/chain_reaction_game_show_play_online_free.pdfIn PDF document text
    • http://lifeeuro.info/social_matthew_liebermanfyjbn.pdfIn PDF document text
    • http://pipvip.ru/cool_ppt_presentation_templatesil350.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/haij5jh/black_eyed_peas_fashion_beats_mp3_download.pdfIn PDF document text
    • http://kvadro63.ru/advanced_structural_analysis_syllabus8rold.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492897/normal_6002448b24615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391024/normal_5fd36e000ef77.pdfIn PDF document text
    • http://hookup673.site/2018_toyota_camry_xse_v6_black_top_and_red_interior4577n.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/chZhbVo/dragonvale_world_mod_apk_unlimited_gems.pdfIn PDF document text
    • http://naturapple.space/memusezuwavewepokivkv0t.pdfIn PDF document text
    • http://blablablacar.online/how_many_carbs_are_in_a_small_oreo_milkshake_from_sonic48pcg.pdfIn PDF document text
    • http://axecheat5.xyz/mulovuresuxididhi53e.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/ge7gdge/luduvazozifaxedutewajifab.pdfIn PDF document text
    • http://opt15.ru/x_particle_2.5_serial_number5cxmv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/00b73ea2-a1bb-4881-9256-95ca40464b0a/51413307767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efbb459c-77bd-4c27-bf57-ff76398282ad/29542373765.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_off00010f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8E 5356 bytes
SHA-256: 01f9b5a1edfbea45dc4eb8bbe8aba79154a968f1f185b8ad6981144a676a9416
font_01_sfnt_off000121e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E9 10308 bytes
SHA-256: b09ccf5a0a12295eef7e2cc9b2a6ec8fb0eab7295b359d4824d521b502edc165

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