Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d075910f436ffa…

MALICIOUS

PDF

78.8 KB Created: 2021-03-15 07:11:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38e92e9c77075d4bf7ad164b404eb632 SHA-1: 23e135b6d576d876b6acdad3a736335d65e3c54d SHA-256: 25d075910f436ffa1eedcb800ae4dbfebde55a08d42ce4b7df86a22f6ecea826
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one specifically pointing to a URL related to enabling VBA developer options in Excel, suggesting a social engineering lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and ClamAV detection confirms its malicious nature, classifying it as 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=how+to+enable+vba+developer+in+excel+2016
    • https://tovunebutulewe.weebly.com/uploads/1/3/1/8/131871744/0a25c790a3d.pdf
    • https://xadadoroz.weebly.com/uploads/1/3/6/0/136024884/guxal_nagufewovuj_zufaruvumow_wonalo.pdf
    • https://goxutulolikum.weebly.com/uploads/1/3/0/8/130814421/1536259.pdf
    • https://cdn-cms.f-static.net/uploads/4416513/normal_604eb72c176ce.pdf
    • https://posuzelivoj.weebly.com/uploads/1/3/4/8/134869480/23199a40f7dcc2a.pdf
    • http://de-bewertung-id2842384.icu/powerwolf_blessed_and_possessedflv0b.pdf
    • https://cdn-cms.f-static.net/uploads/4497359/normal_6023f13d8d705.pdf
    • http://nout-sale.site/sewuwaguga5y4rc.pdf
    • https://cdn-cms.f-static.net/uploads/4382974/normal_602683314c873.pdf
    • http://tixshopclub.space/is_quiznos_good57cav.pdf
    • http://wersita.space/livro_psicoterapia_e_relaes_humanas43yil.pdf
    • https://static.s123-cdn-static.com/uploads/4427282/normal_5fd0940b58b97.pdf
    • https://cdn-cms.f-static.net/uploads/4496374/normal_603d2d4e8e995.pdf
    • https://zepafasamog.weebly.com/uploads/1/3/4/3/134361306/nabanonivozab_jibitatapenuxel_mofitikewifat_gowuxodotufebin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://598a1783-db1d-4ebb-96f5-d3ad23e1e090.filesusr.com/ugd/ae99eb_e8bbb3438f8449c5b601dc95aba9d05e.pdf?index=true
    • https://s3.amazonaws.com/dobesogum/alliance_data_systems_annual_report.pdf
    • https://s3.amazonaws.com/xutomoxu/mans_search_for_meaning_barnes_and_noble.pdf
    • https://s3.amazonaws.com/jinabom/ejercicios_con_el_abecedario_en_ingles.pdf
    • https://s3.amazonaws.com/kozibowisenatu/regabutusagesuxurasub.pdf
    • http://zitasixan.atwebpages.com/62245248910.pdf
    • https://s3.amazonaws.com/xoxaneral/vizio_29_sound_bar_2._0_manual.pdf
    • http://zevesijuduma.atwebpages.com/health_and_safety_officer_salary_ontario.pdf
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_2777c9a59f394355988ded66fbb21a0e.pdf?index=true
    • https://99516632-72ce-40f3-a9a1-a01c91361c65.filesusr.com/ugd/e42c35_ce374aef1e5c465f98764f906a026da4.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2ca.bin
1bb6638b2c09ad2a028160ca8d16e81e98d57d53ad6254545aa71ac6e93b8c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CA 5692 bytes
font_01_sfnt_off00010648.bin
6115cbf5d3a5516012f80a2ca5da1d5fd1f6ab9137f654789ada0ffa1eef610a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10648 11844 bytes

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