Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf5540ab30f2f7b6…

MALICIOUS

PDF

67.6 KB Created: 2021-02-16 18:46:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bdf4a87e64ccdbaf275faaad17e5a6da SHA-1: 9817c44a31bc4108fd1f06abf54dc75e6f279952 SHA-256: bf5540ab30f2f7b6023ed200a56f3652019480b261b1fcc0f75310a4ae5d8a47
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=feudalism+3+hacked+unblocked In PDF document text
    • http://gk-kuban.ru/calculating_velocity_and_acceleration_worksheet2rmq3.pdfIn PDF document text
    • http://ebay-coupon.ru/643171742858no9s.pdfIn PDF document text
    • http://theandyhong.com/lelenajivoxojofudilerujidzgt0h.pdfIn PDF document text
    • http://ins.expert/fitbit_charge_4_manual_syncylg4x.pdfIn PDF document text
    • http://100naturals.fun/rejibotudanupidupajerc0j7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5ff16b7943ab7.pdfIn PDF document text
    • http://choosemadam.site/funamutenipox9plh5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488558/normal_5feb862c9251f.pdfIn PDF document text
    • http://henrysavbr.site/how_to_use_farberware_stovetop_pressure_cookers23uv.pdfIn PDF document text
    • https://cdn.sqhk.co/gufuluzibos/fdDpOKy/hill_climb_racing_2_pc_apk.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
    • http://mabazekow.epizy.com/sample_job_appointment_letter_format_in_word.pdfIn PDF document text
    • http://nivufebolira.epizy.com/tales_of_symphonia_100_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/87537527260.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/anime_movies_english_dubbed.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_off0000c011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC011 5208 bytes
SHA-256: 280172b654a2b7986d420c12f357480848c7e5106c3c325bc28eacddf5ff69ff
font_01_sfnt_off0000d191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD191 10168 bytes
SHA-256: e776fcc2ccfd5288007317beaf63baa0519ef98b74293f3affd9b9676b121eee
font_02_sfnt_off0000f3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AA 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2