Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac9811c3aad4eeb6…

MALICIOUS

PDF

72.4 KB Created: 2021-02-25 08:26:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3751cd87aded0fb347b8c237a17b19b9 SHA-1: ea3f3313778bbce191031cd5fe804db281309193 SHA-256: ac9811c3aad4eeb6fc3c358661dbc73d89c5019f8036dba151d015a1a2299194
136 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
  • 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/award?keyword=online+quran+text+with+urdu+translation PDF link annotation
    • https://cdn.sqhk.co/nujusowidom/Uhdjepy/xanipafagibefazukazetu.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/1W0Wvhd/cubacel_recargas_online.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubiviv/hia5idm/90181364170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460983/normal_60188b2cc3779.pdfIn PDF document text
    • http://gomededow.22web.org/16754982029.pdfIn PDF document text
    • https://cdn.sqhk.co/guzelatolina/gcRD8jd/games_hub_all_in_one_games.pdfIn PDF document text
    • https://cdn.sqhk.co/wevubuse/g2ieCie/liverpool_latest_news_today.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415534/normal_5fd77b39b6f7d.pdfIn PDF document text
    • http://ropiwijubasa.22web.org/reading_sub_skills.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477651/normal_5ff7e244eab1a.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/xelimewat/6185351661.pdfIn PDF document text
    • http://melitere.epizy.com/pizox.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/nefaxazufubuvaruf.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/vsco_x_cracked_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/wugokedogamebaputunopej.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/22377751320.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/vasofejaxidipisotan.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_off0000df41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF41 5224 bytes
SHA-256: 486cf8718355f40416bef8975d2e23e4841ecdfcb828ee2df007a68f1a0f8da6
font_01_sfnt_off0000f110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF110 10276 bytes
SHA-256: b9334b7feb45ada27dfab738b72e62b39affda19e5c997fd4657f43d3a308b94