Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8fbfc8768e8dd2…

MALICIOUS

PDF

71.6 KB Created: 2021-02-13 22:27:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 73fb23d0e75137a1803ee4439a311830 SHA-1: 7a544d745604a8726057812a4a6f12ab25325c32 SHA-256: db8fbfc8768e8dd24e211871b2c3cbebe8f85d646eed3d6f9dc778854c2de9de
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://jottigo.ru/wix?keyword=thirty+one+outside+order+form PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483104/normal_5fcd27c52503d.pdfIn PDF document text
    • http://fexodubavilukub.22web.org/axe_alliance_x_empire_android_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/iiAjdRw/36569714888.pdfIn PDF document text
    • http://fezibinuzot.iblogger.org/kanonuximumudopemulo.pdfIn PDF document text
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/9973904.pdfIn PDF document text
    • https://cdn.sqhk.co/lomotutuwe/aNgcUig/4426162980.pdfIn PDF document text
    • https://cdn.sqhk.co/numiwufeguv/7PMsmTw/61435177205.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/ieiaihw/67085027514.pdfIn PDF document text
    • https://nulasexojexof.weebly.com/uploads/1/3/4/0/134012614/2936639.pdfIn PDF document text
    • http://:personalize31gifts.blogspotIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jopavufugas.epizy.com/hack_wifi_password_wpa_android.pdfIn PDF document text
    • http://duxuramubot.epizy.com/data_matrix_2d_barcode_format.pdfIn PDF document text
    • http://zotebizitiwiwe.epizy.com/zolamujajudidodimiboriv.pdfIn PDF document text
    • http://gagutaxu.rf.gd/consulta_reporte_centrales_de_riesgo_colombia.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_off0000dc10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC10 4956 bytes
SHA-256: 4a302d68fbd2f7af9112f6335990c02d81a18c66e7777e480180eb0d267903c2
font_01_sfnt_off0000eccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCC 10840 bytes
SHA-256: 7eb98dd11181f60ce41f7ba410be1495e2f487a7ad8bb83577b9f36ae3911c2c