Malicious PDF — malware analysis report

Static analysis result for SHA-256 5651684a0c0a2716…

MALICIOUS

PDF

87.7 KB Created: 2021-03-10 18:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: debad6401c82395f382b08949bf28bcc SHA-1: ce4bd81b4444cb2a9dbbc3e2990c3a567cd27b07 SHA-256: 5651684a0c0a2716a2912dafe21057a1b0484b9853baf6c9f580f4cae313e336
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous external URIs, particularly one pointing to 'gimoguvi.ru' with a query related to 'aadhaar card software free pc', suggests a phishing or malware distribution lure. The document body, though heavily obfuscated, contains metadata related to PDF creation and potentially embedded links, further supporting the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/123?utm_term=aadhaar+card+software+free++pc PDF link annotation
    • http://itnegozio.info/geligatakivepegadirutbt9d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496607/normal_5ffeefa6e2e59.pdfIn PDF document text
    • http://vusejulene.iblogger.org/tuxarezulitexito.pdfIn PDF document text
    • http://daddytestit.xyz/daily_self_care_checklist_appefrlz.pdfIn PDF document text
    • http://pimazisiperej.iblogger.org/mowajokosofadubuxegafugud.pdfIn PDF document text
    • http://ergors.space/samsung_vp-d381_mini_dv_camcorder_manualu8z3d.pdfIn PDF document text
    • http://kuxogajow.iblogger.org/jatidisuwoxod.pdfIn PDF document text
    • http://indonesia2health.online/93810811250r2ptc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490121/normal_600440f1d200b.pdfIn PDF document text
    • http://lovechat24.club/how_to_build_a_hybrid_mobile_appd28rf.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/8e8d8e1b-9e1b-42d2-a6c7-00761e50787d/is_ford_maintenance_expensive.pdfIn PDF document text
    • http://jujizulafob.rf.gd/meconium_aspiration_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/minecraft_hacked_client_1._5_2.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/37589196935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28449530-1231-4942-9569-1d033aede1e3/what_year_is_today_in_julian_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/full_form_of_mla_in_marathi.pdfIn PDF document text
    • http://dezezefisimel.rf.gd/lupanaxibuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55e4802-142e-4efc-b30e-b1228426c0cc/76677805047.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/latubag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12080137-7d0d-4fba-b33b-3d5a560452bf/19480448483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2018a2e3-9800-43b1-a1e5-69be6221b9de/how_to_reset_a_samsung_tab_3_to_factory_settings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dae565fb-eb0d-44f7-b5e4-488849302674/79556796237.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_off00011aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA6 5292 bytes
SHA-256: a865db315ae7396f4d61d2a2f69974961ec3bb66939e1c3664d13e870a20b561
font_01_sfnt_off00012cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CB8 10700 bytes
SHA-256: 938b4f51e4175935897191d812e9cc5394cf0ca5d64844c6f4bb642ec5f6a18b

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