Malicious PDF — malware analysis report

Static analysis result for SHA-256 b926ae223dfc15d0…

MALICIOUS

PDF

71.4 KB Created: 2021-02-15 16:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c4c49d4a3c6a58ca26ea38ab8b64ea0d SHA-1: 386445ee1c829563d6ccffe8cdb762aaec119560 SHA-256: b926ae223dfc15d09f8b24b8bf6fba79080cbae89d27eb32dceb9ff87ff22140
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/123?utm_term=how+to+program+universal+remote+for+magnavox PDF link annotation
    • http://kataeta.club/bekononikobupajexufav2ztk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446272/normal_5fcbfa07ea454.pdfIn PDF document text
    • http://axecheat6.xyz/90449902284slg7b.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwifoviwalo/b7TThjS/grist_mill_fire.pdfIn PDF document text
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/wetokeb.pdfIn PDF document text
    • http://esclick.pro/flute_music_sheets_free_popular_songsusqys.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobuwaxegu/igjNQhh/18151611833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374211/normal_5fd34221d69e1.pdfIn PDF document text
    • https://cdn.sqhk.co/bofozuto/sicHbDe/president_2020_election_results_cnn.pdfIn PDF document text
    • https://penoruzeni.weebly.com/uploads/1/3/4/1/134132400/4548447.pdfIn PDF document text
    • https://regafuraseni.weebly.com/uploads/1/3/4/6/134663643/tumazakemiruriloko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416653/normal_5ff88ce0db268.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502188/normal_5ffbdf412d044.pdfIn PDF document text
    • http://poopo.ru/98151804671ztmo6.pdfIn PDF document text
    • http://remontvorot24.com/video_maker_for_youtube_video_guru_apk_downloadkaf95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_5fec5c18bc661.pdfIn PDF document text
    • https://gipasutojemozup.weebly.com/uploads/1/3/1/3/131379868/d4461096368f.pdfIn PDF document text
    • http://goloturasituj.66ghz.com/dapofesomogifibovu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA70 5400 bytes
SHA-256: 2b3a71bfc69601617252e87f84b9acd319c83f840f6495f2fddc36528641025b
font_01_sfnt_off0000ecd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 10368 bytes
SHA-256: 220a55fb8b09bbffdf2db15da3f9c75b084bfb3158f8cd7cd40add73707295b0