Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc7c8c91ede2162f…

MALICIOUS

PDF

71.9 KB Created: 2021-02-05 06:58:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e96f34ce13f1c881c914752631fe48d4 SHA-1: 924d53125bc4f0fe0bb2cb1709e104b4b4358252 SHA-256: dc7c8c91ede2162f97702ce370ec52d0668a24512bede4f63f4bd83ea79088b7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/aws?utm_term=instagram+dark+mode+without+android+10 PDF link annotation
    • http://everydays.space/93628073464od7pw.pdfIn PDF document text
    • https://cdn.sqhk.co/menigopas/bhc9Xci/pegozuzanoxavezokokopag.pdfIn PDF document text
    • https://cdn.sqhk.co/jatizaru/jdCXZeQ/lejajegomafujiwejededug.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/UhfnKhd/vintage_wave_runner.pdfIn PDF document text
    • http://1yamal.space/95057315474o0xvt.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/PhajEr8/son_of_zeus_movies_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371800/normal_5fcb5abfa965a.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/c7giuho/last_player_survival_battleground_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nulaliki/jd4mKj9/vex_45_degree_gusset.pdfIn PDF document text
    • https://cdn.sqhk.co/gujadozede/Rghhbih/79651937075.pdfIn PDF document text
    • http://milansit.space/bundle_stickers_for_sale_in_bulkdur7k.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/8thaPXs/zombies_vs_robots_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/fFjdgci/vofijutekutex.pdfIn PDF document text
    • https://cdn.sqhk.co/kurapobal/jaijrA5/40542049931.pdfIn PDF document text
    • https://cdn.sqhk.co/fulaxanew/iik8haI/sea_monster_city_cheat_apk.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_off0000dbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAD 5492 bytes
SHA-256: 89c0bcafa39e1d0a7a871f16a8f872db5cd8e1b4d75dbc0ad008cbe7b8447f38
font_01_sfnt_off0000ee4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4C 10596 bytes
SHA-256: cf7ec4a404ecde098b608aaa2a6e88799852161ee479e33f122f775a5f9fffa6