Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b9bd65cca2aa93…

MALICIOUS

PDF

70.4 KB Created: 2021-02-20 12:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 26df31f280edfd0e474285f8f3c42bcc SHA-1: 077d72194e054b74bcf8f32683ab9a20b46d63be SHA-256: 06b9bd65cca2aa9396f77edd5e27cec74fb7423c35d2c80eccfb4cf9ff015956
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=the+rational+optimist+chapter+summaries PDF link annotation
    • http://todayit.pro/52201415820lnwv5.pdfIn PDF document text
    • http://onlyforyou.space/how_to_apply_for_a_us_postal_jobnfxua.pdfIn PDF document text
    • http://aydym.club/nascar_race_kansas_city_results3g9p2.pdfIn PDF document text
    • http://aduo5.online/rifurfkd96.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/zowam.pdfIn PDF document text
    • http://sreda.city/gnostic_book_of_changesdu16p.pdfIn PDF document text
    • http://perevod24-card2card.site/72835299944g8lod.pdfIn PDF document text
    • http://moreprodukti.com/26072017174mamjq.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/1ioja1m/nasacort_nasal_spray_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/sadudolamom/cgcicic/slimeatory_new_videos_2018.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/womirofop/xuvofumujodevebafaseki.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/4374123399.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/what_does_seeing_number_111_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/clash_of_clans_new_update_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/jio_whatsapp_free_app.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/30253855530.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/wetowugesobusadizi.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/51453994926.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_off0000d856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD856 5124 bytes
SHA-256: 9c3cf4be4db885ded88476d2c330b296b343192f6c4d37719977a230d86e203a
font_01_sfnt_off0000e991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 10164 bytes
SHA-256: e236c7ffb709431f799c72e020a3156ae38b7e9d414776608439529078260330

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