Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0daf5a0c638748…

MALICIOUS

PDF

85.3 KB Created: 2021-04-16 00:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f48b5ed1be365ea01b7f60ad841ecee7 SHA-1: 74b66546bfc6cba715977f75e3b36d942767c1ca SHA-256: 8c0daf5a0c638748cb5160071ed0b4bfd6687902c0e9b439169765872ebf8815
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure related to a 'Nordictrack skier workout plan' which redirects to a suspicious URL. This URL is identified as an SEO redirector for phishing, indicating a likely attempt to trick users into visiting a malicious site. The ClamAV detection and ML classifier further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/strik?utm_term=nordictrack+skier+workout+plan PDF link annotation
    • https://s3.amazonaws.com/banula/13633169427.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/32462801742.pdfIn PDF document text
    • http://kigirifaduguv.getenjoyment.net/a_muralha_de_gelo.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/rlc_circuit_lab_report_conclusion.pdfIn PDF document text
    • http://itrom.fun/monster_rancher_2_switch_north_americaowmk0.pdfIn PDF document text
    • http://siteznakomstv69.space/wuluxivomunevieul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502819/normal_60298eb698346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448328/normal_60443c0b8ea27.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/mogonobugofavisu.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/nalaxkk7e0.pdfIn PDF document text
    • http://rebezun.mygamesonline.org/antioxidant_meaning.pdfIn PDF document text
    • http://purpless.vip/how_to_change_a_heat_thermostats2v5k.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/bojod.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/adding_and_subtracting_fractions_visually_different_denominators_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/simcity_4_download_free_full_version_pc_game__crack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446287/normal_5fdbb043b96ff.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/guided_reading_template_free.pdfIn PDF document text
    • http://amsidisi.xyz/90128880104o2a3u.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimurami/d0LAicc/pogosiputip.pdfIn PDF document text
    • http://metiwizonud.getenjoyment.net/ponovego.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/XXigjhU/download_game_alien_zone_plus_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/how_to_write_a_poetry_comparison_essay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF4 5076 bytes
SHA-256: 98410e362982c85f6a3e5cff9160414a3d0262dd0ed21e757016727f6bc855a0
font_01_sfnt_off00011058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11058 11992 bytes
SHA-256: 3cb061a9e6d0130bc753e00d4c69b055e90a8398d889dc612008cbf04692e2b0
font_02_sfnt_off0001380e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1380E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176