Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a748fc2cb751310…

MALICIOUS

PDF

81.2 KB Created: 2021-02-07 11:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7c5496f88a097e96ba2d04cf4f0dc2da SHA-1: 08b3b18c9a7f4f70b9514538752e6d070f721faf SHA-256: 7a748fc2cb7513104c8aa58adbb08490278b5f66d985ce4c8dab5cc7276bd53a
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://baarspo.ru/wb?keyword=gulzaar%20chhaniwala%20kasoote%202%20ringtone PDF link annotation
    • http://webpost.pro/sipevbitth.pdfIn PDF document text
    • http://nejufez.22web.org/92390567834.pdfIn PDF document text
    • http://intereriia.com/lurajumefivizukea2zd1.pdfIn PDF document text
    • http://logmeinnow.xyz/plant_systematics_michael_g_simpson_downloadhf2ms.pdfIn PDF document text
    • http://xbet1.fun/personal_fitness_trainer_certification_singaporeril10.pdfIn PDF document text
    • http://reactivaperu-2020.com/protein_synthesis_transcription_and_translation_worksheet_answersbxw11.pdfIn PDF document text
    • http://fupomogusi.22web.org/terminating_employee_letter_template.pdfIn PDF document text
    • http://andyhongdigital.com/abbaigaru_pelli_naa_songsb9mkx.pdfIn PDF document text
    • http://instofficial.online/1r9er.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sojisij.epizy.com/66172607745.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/monopoly_board_template.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/arsenic_ions_formed.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/the_austere_academy_weebly.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/62256768762.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/28815295056.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/uc_browser_apk_laptop.pdfIn PDF document text
    • http://vekoxoke.epizy.com/26042392219.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/vcloud_air_network_program_guide.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_off0000feec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEC 5428 bytes
SHA-256: 80e7c759bbd997a1c606b4bf6b83866bf2fd11f3d7bd52766c743388469d2b36
font_01_sfnt_off0001117e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117E 11728 bytes
SHA-256: 5401b4e7f97d4db96ae6c0e71df5fdbe4df956df145bf9d3bd46787e3db22ce3