Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9aecdc572209b32…

MALICIOUS

PDF

72.3 KB Created: 2021-02-17 19:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8d574f62bc3583763e9807dee542cc46 SHA-1: f4a7af5a335beb8e808a6a5e8a846429d93c6164 SHA-256: a9aecdc572209b32e8246a0821c2c68451bd99d9a9d13235e844b0efeac29beb
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://maypoin.ru/123?utm_term=best+healthy+drinks+at+dunkin+donuts PDF link annotation
    • http://dupigetibulira.iblogger.org/rodize.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/gAjaCig/tiponasonewawesubi.pdfIn PDF document text
    • http://kosufezegaxid.iblogger.org/free_antivirus_for_android_tablet_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/h0geh48/23733962436.pdfIn PDF document text
    • http://xabidewukolesas.66ghz.com/91341510725.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/6ty1vjc/45426878157.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/jh3LrDE/lukosuzudefotirakurukakug.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/kozibowisenatu/borderlands_handsome_jack_collection_trophy_guide.pdfIn PDF document text
    • http://luvurukakun.epizy.com/bluestacks_lite_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/auguri_per_matrimonio_formali.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/zejorigenokej.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/kimibidu.pdfIn PDF document text
    • http://nazopagoja.epizy.com/girlfriend_song_ringtone_bestwap.pdfIn PDF document text
    • http://dijijesuwaxon.epizy.com/file_manager_linux.pdfIn PDF document text
    • http://sekovukubetib.epizy.com/sezeziwatubudopokil.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_off0000ddc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC3 5128 bytes
SHA-256: f2e74a49903969b165a5ad48d4a275320d8cf13c0e8e2a5bb49c88aecf46019c
font_01_sfnt_off0000ef36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF36 10908 bytes
SHA-256: 8c2525972f7a3242b969be7517a7fe0af7c502554d6d6ec9d2a1e75494370036