Malicious PDF — malware analysis report

Static analysis result for SHA-256 4416e35254651f03…

MALICIOUS

PDF

87.1 KB Created: 2021-05-29 16:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 290255f01b1cc742ad2a0e5c28e16681 SHA-1: 0fd3cdab0dd0daeb06d61320bc31d389a88bc78c SHA-256: 4416e35254651f0343281b602750ab8d8add04007b211ab7cfa3f45d02183750
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm designed to direct users to external sites. One prominent URL, 'https://dugedepap.ru/strik?utm_term=can%2527t+pair+swann+camera', is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 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.
  • 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://dugedepap.ru/strik?utm_term=can%2527t+pair+swann+camera PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464301/normal_6059471b8d346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_606a9565413b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412780/normal_605f65bd47a4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_604ec100f1b28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421937/normal_6051ae21dfccb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407327/normal_5fff31ed8bcc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_602c2516d14c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_600c6ea9bb897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452834/normal_600b24528e671.pdfIn PDF document text
    • https://melinifijegor.weebly.com/uploads/1/3/4/2/134265386/7206072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374380/normal_6041878121fbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_6035b07a02413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414860/normal_6037bb8549740.pdfIn PDF document text
    • https://fikelepokaretes.weebly.com/uploads/1/3/1/3/131397971/zegujiz.pdfIn PDF document text
    • https://kilekefaze.weebly.com/uploads/1/3/4/6/134631798/gafugafonobapebuxuju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_6065db32d5ff4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7e58c36f-d527-4242-953a-3c093ae70a0a/fundamentals_of_fluid_mechanics_8th_edition_gerhart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9b9730b-d622-459f-8b6c-61f9fdf6be3a/gun_shoot_strike_game_download_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1080239-e109-4abf-9d33-79a3a450b264/how_to_update_a_garmin_astro_320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/908f87a8-6cc1-4b0a-a2ef-ce4f94fd43e2/world_war_z_2_full_movie_online_free_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/095b51e7-4833-451a-8e08-7441c56fd25a/fafefuvokes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ec625d-d3ab-4af3-9aeb-a04c68ca8d45/how_to_open_excel_in_tosca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f1ea9b5-716b-4f1e-ac06-960555f6980c/ted_chiang_exhalation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42039d2e-3cb8-4bfb-bf40-d4095f3b5780/engineering_drawing_books_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6f043a8-0843-49e9-8023-f2f4b6044be9/stock_market_holidays_20201.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001087b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087B 4872 bytes
SHA-256: 5a0541d3c75b0aad4e1a020cfb1731bda1ece2b4a04cec9b9570122553fe1d9d
font_01_sfnt_off000118ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118FF 11596 bytes
SHA-256: 226d7a26e8359e283ef9e84f61a56d870a6af495521e6509a4b305e8a7494020
font_02_sfnt_off00014051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14051 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34