Malicious PDF — malware analysis report

Static analysis result for SHA-256 b820a0e081cf63fe…

MALICIOUS

PDF

75.2 KB Created: 2021-04-02 00:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f8e48fcec22040b467ced3e51f9ac593 SHA-1: d19e3d6d784dc43f32366dda4de362ea1cef48c8 SHA-256: b820a0e081cf63fe0b60e46ca872d43e585d8e2060b4f400023907992be6d99e
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many hosted on disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a 'Bemba English dictionary PDF'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/award?keyword=bemba+english+dictionary+pdf PDF link annotation
    • http://sevastopol.sale/duveserqdjn.pdfIn PDF document text
    • http://datab.vip/lead_me_to_the_cross_guitar_chords_easynme28.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/carl_s_jr._nutrition_information.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/server_dell_t30.pdfIn PDF document text
    • https://cdn.sqhk.co/datagemop/kXWRTZ7/sulegowatafokifepixezul.pdfIn PDF document text
    • http://betmoy54.com/nefajonujigadosarm187.pdfIn PDF document text
    • http://gosepakaf.getenjoyment.net/airtel_dish_tv_channel_number_list.pdfIn PDF document text
    • http://ruwufuwetoj.mygamesonline.org/g_shock_5081_ga_100cf_price.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/fWp9KaZ/pufitalafu.pdfIn PDF document text
    • http://life-news.tech/kenmore_elite_quiet_pak_2raqaj.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/xutefinofajofegizugarmujw.pdfIn PDF document text
    • http://hookup666.site/digital_integrated_circuitsomox8.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuvapexal/aidjaie/types_of_debate_motions.pdfIn PDF document text
    • http://aydym.club/zaputirifoxukimavowetonj0u0w.pdfIn PDF document text
    • http://zhk-rekord.info/kuliwujilofevaginibomib4dp65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wivaxodi.onlinewebshop.net/26509515462.pdfIn PDF document text
    • https://c6506652-bf5e-4f52-be36-03dbfaede22c.filesusr.com/ugd/f74919_7874c858aa9c4ce19b9645a540ba167b.pdf?index=trueIn PDF document text
    • http://jabejanaboz.atwebpages.com/15283358649.pdfIn PDF document text
    • https://73c25812-7308-4b32-b985-10e2a25710ca.filesusr.com/ugd/5b604d_3931810555eb412f9356da8abae9ab1e.pdf?index=trueIn PDF document text
    • https://0a497e50-07dd-462d-832d-d8678f741a8e.filesusr.com/ugd/5f857b_c49651d4439543d39967cc1d92a202be.pdf?index=trueIn PDF document text
    • http://nerezusilanake.atwebpages.com/fesekobinamufoxogitagi.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_off0000e3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C4 5860 bytes
SHA-256: d26728fe577a288b945b96ca2b7f8a3c0d2c98e3acce71df24a1c116f9d2c88d
font_01_sfnt_off0000f793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF793 11824 bytes
SHA-256: d4aec61bb5b5fd27c83b86c34dbbc1ff13511c16ef87134debe6aa926402efef

Open this report in the interactive analyzer, or submit your own file for analysis.