Malicious PDF — malware analysis report

Static analysis result for SHA-256 900fcf6e9df4fd11…

MALICIOUS

PDF

75.8 KB Created: 2021-02-19 19:01:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 95e408cf1e97bbda8a0aac5d87007c3a SHA-1: 24b2203d7dff452c2612f76640cc8b6099709c4c SHA-256: 900fcf6e9df4fd11835b31cc7a8b727ef2d954a1c65e7d251049fb260a1cb80d
136 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
  • 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.
  • 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=the%20100%20book%204%20read%20online PDF link annotation
    • https://cdn.sqhk.co/lipetebo/eshaCjg/4517021974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485016/normal_5fd63156c86c8.pdfIn PDF document text
    • http://kuroramogesok.iblogger.org/jomovidowepaxijobil.pdfIn PDF document text
    • http://nefuwumimo.iblogger.org/86247938840.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/ghjiije/tetugokudonex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bugutaj/16170195415.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/buregijegisawanutuw.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/mumbai_police_malayalam_movie_bgm_free.pdfIn PDF document text
    • http://fizuxobitunoge.epizy.com/bichagadu_movie_songs_ing_come.pdfIn PDF document text
    • http://jenofabejuvokag.epizy.com/avneet_kaur_video_song.pdfIn PDF document text
    • http://rojapaj.epizy.com/semuxojesugulapozifuda.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/nexovula.pdfIn PDF document text
    • http://gufaxepelirub.rf.gd/artificial_neural_network_in_r.pdfIn PDF document text
    • http://refowokewip.rf.gd/synthetic_division_practice_problems_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/76803129667.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_off0000ed2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2F 5172 bytes
SHA-256: 704778a1fbdc9f99023b4994473f1692ba0b24c46f032b32553d1d782f8bde0e
font_01_sfnt_off0000febf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBF 10472 bytes
SHA-256: dfa8c16b215b686c17d18a7d01d0b06500e7f802670e1116ca1ee322f0c99300