Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39ab253a0eae39f…

MALICIOUS

PDF

69.9 KB Created: 2021-02-08 02:54:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b69628ec9ece1edafee93c470416969 SHA-1: 94fc417b1c642b3519535493a7b642e87f70c070 SHA-256: c39ab253a0eae39ffa021bd3e05798878039524aeb992fe5da90626dc8694277
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://seumenha.ru/wb?keyword=police%20story%20english%20movie PDF link annotation
    • https://cdn.sqhk.co/fegozanodedu/NnhVYie/kelexuso.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/2196097.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/rhbmPN1/dunijujoferuliwutedilud.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/ahhd40V/eye_of_the_storm_meaning_fortnite.pdfIn PDF document text
    • https://cdn.sqhk.co/popaxutu/EXsgfoz/gikopemeropikapagegesus.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/PQ5ibhg/95747745340.pdfIn PDF document text
    • https://paxowamowutujaf.weebly.com/uploads/1/3/4/3/134322095/vorudotiw_sinetagunoto_toziwekasik_mubeduj.pdfIn PDF document text
    • https://jasezanita.weebly.com/uploads/1/3/1/6/131637239/vomoki.pdfIn PDF document text
    • https://binapesod.weebly.com/uploads/1/3/1/4/131438069/gewizevulepomes.pdfIn PDF document text
    • https://wixevilit.weebly.com/uploads/1/3/4/8/134873569/8921527.pdfIn PDF document text
    • https://cdn.sqhk.co/sejarepezibo/jahhjbp/famous_movie_scenes_to_recreate_at_home.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/iTgijjN/korean_kpop_video_songs_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gobopovupav/jeg6ges/nufota.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454671/normal_5fc6ae1d476c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pebulibupa.rf.gd/archer_c50_v3_firmware.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_off0000d48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48E 5164 bytes
SHA-256: fa357086c8d68f6bd5a6849579a85715bdfdb782af78e780952e575a19edf232
font_01_sfnt_off0000e604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE604 10944 bytes
SHA-256: 5338a12d4d0b6857b5cd1c3581902bbe2a8ac7b87e95605e0dfd0ce712a57a88