Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabe4faa70b4c801…

MALICIOUS

PDF

81.2 KB Created: 2021-03-25 10:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ace3f99ec1d5c3b534f5d0276fe27258 SHA-1: 9962f65731182bd683ad06041d3d0c8918170e2f SHA-256: eabe4faa70b4c801f7fac1bd9274c8eb64f9df14bb9346c69a1a320282165c74
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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/strik?utm_term=robin+hood+2010+movie+summary PDF link annotation
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/rajoberixufamomoj.pdfIn PDF document text
    • https://bemozepe.weebly.com/uploads/1/3/0/7/130739793/wadijajixak.pdfIn PDF document text
    • https://gazulaloruvuv.weebly.com/uploads/1/3/4/6/134693071/9c4da882a5be.pdfIn PDF document text
    • http://3bureaureport.info/american_football_drills_to_do_at_home33gvo.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/razalisibutapotigu.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/10704510393.pdfIn PDF document text
    • https://cdn.sqhk.co/xobadata/jbigZ6L/bafovinaluxakafegifafu.pdfIn PDF document text
    • http://xviiivbgz.com/lcoois_e_fenois07vzy.pdfIn PDF document text
    • http://particulier-societegenerale.xyz/rename_full_package_name_in_android_studioemsrt.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/171442586.pdfIn PDF document text
    • https://gawofatofuwe.weebly.com/uploads/1/3/1/3/131380275/xederasozax.pdfIn PDF document text
    • http://sale50.pro/what_does_sud_mean_on_a_whirlpool_duet_steam_washerzejfe.pdfIn PDF document text
    • https://nolulanulupu.weebly.com/uploads/1/3/1/3/131379612/musutix_sakapubis_nozewujabimesix.pdfIn PDF document text
    • http://artdebug.site/utorrent_pro_uptodownn2ppp.pdfIn PDF document text
    • https://cdn.sqhk.co/wemowubire/gc5Ywjd/e2l_simple_music_player_for_dementia.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/gudukupir/synthesis_of_aspirin_lab_report_discussion.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/86738073755.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/31298440311.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/pentair_fns_plus_36_backwash_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/vanavu.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_off0000ff29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF29 5668 bytes
SHA-256: 8e9bc5203b3dad436a78d25164e6351b4299e0fff426b3a950dcd90607f8925b
font_01_sfnt_off0001124a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1124A 10760 bytes
SHA-256: 7320b265c1554ad2ded02a38398e1490c1e408dfc106f69493578e5b86fbd330

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