Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e3ccfa3239871c…

MALICIOUS

PDF

92.8 KB Created: 2021-03-07 19:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a3becdbb1c57b3f80f866bb29ffb7afb SHA-1: 59cc25939789bcf5c06f8f48155caa3bfee58ae1 SHA-256: d7e3ccfa3239871c1d33d809b6591f6e7a0ed8d59350dd72ad8510c34c20ffdb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://midufefew.ru/award?keyword=el+desaf%25C3%25ADo+del+amor+40+d%25C3%25ADas+pel%25C3%25ADcula+completa PDF link annotation
    • http://gadimikofeboto.iblogger.org/zozigedoxajutafawibar.pdfIn PDF document text
    • https://nuzilemuf.weebly.com/uploads/1/3/4/4/134479477/lilotetesufavemude.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/gfnhceh/battleground_s_survivor_battle_royale_apkpure.pdfIn PDF document text
    • http://sudenusona.66ghz.com/puginuvetobesolowiwotogo.pdfIn PDF document text
    • https://cdn.sqhk.co/vifamepupib/4cdhewf/average_pay_for_stripes_cashier.pdfIn PDF document text
    • https://cdn.sqhk.co/ximirujusuxo/hhicghT/pesatesez.pdfIn PDF document text
    • https://puluzoxaxidu.weebly.com/uploads/1/3/2/6/132683087/gonowofevisakuzeru.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/dosalapasenow/payment_gateway_india_for_android_application.pdfIn PDF document text
    • https://b23183eb-b2e5-455e-bc25-91fac1efd10f.filesusr.com/ugd/cc14e4_ee2c454942d54f7baa6b79daf78aaa24.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/julaxel/performance_evaluation_meaning_in_hrm.pdfIn PDF document text
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_c9880925702640d8bc3f79fb0cd94842.pdf?index=trueIn PDF document text
    • https://0f8fedcd-12c0-4678-86f8-e2bff7269121.filesusr.com/ugd/70e7d4_0bbce1d7d8dc490eb40c459551c5ce5a.pdf?index=trueIn PDF document text
    • http://losaxoxajav.epizy.com/kumafavi.pdfIn PDF document text
    • http://zefuziboveteg.epizy.com/nujaluzofuvopep.pdfIn PDF document text
    • http://bejutamukedus.epizy.com/nawipu.pdfIn PDF document text
    • http://veratab.epizy.com/cfop_vs_beginners_method.pdfIn PDF document text
    • https://37523d11-79cf-4eb3-ada4-f05de57c71ee.filesusr.com/ugd/275374_553016b8fb954516ae9e6e86ab088526.pdf?index=trueIn PDF document text
    • http://robowogutalopet.epizy.com/juzalawanebetejisoge.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_off000128aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128AA 5544 bytes
SHA-256: 11e1c348e30c0efe0da4bbd3c94a182dfb2dd5e5381db64d8bed86a612c89278
font_01_sfnt_off00013b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B7A 12536 bytes
SHA-256: 14ab0d71931cbd302061d7954820757702d8f7188418dd66d4149e2aff101c1a

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