Malicious PDF — malware analysis report

Static analysis result for SHA-256 018a48987e6ab5ad…

MALICIOUS

PDF

68.9 KB Created: 2021-01-03 17:23:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-08
MD5: c25d5a4d97f42d6de1126a3cc061bd10 SHA-1: 97c1d11a79169dd870c33fb0f75bc682a183001b SHA-256: 018a48987e6ab5ad6f9a83aaafd70e509e8ee05de940460a0a67824abd1df55e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://s3.amazonaws.com/zidosozawok/georgia_guidestones_time_capsule.pdf In PDF document text
    • https://s3.amazonaws.com/gomakobez/study_spanish_answers_basic_quiz_44.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/karlie_guse_found_dead.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/72224662248.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/barcelona_vs_villarreal_5-_1.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/93850294824.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/waste_management_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/osrs_smith_guide.pdfIn PDF document text
    • https://cctraff.ru/wb?keyword=dungeon%20keeper%202%20level%204In PDF document text
    • https://cdn.sqhk.co/kezavilageg/hjgGNJk/xcom_2_avenger_power_coil.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d171.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d171.bin)
    • 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 extracted file (font_00_sfnt_off0000d171.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD171 4944 bytes
SHA-256: 0b1efaa41b2ecb6b29d82bf5293b508f901ea7dc84bd81f06d514bb0ca39abac
font_01_sfnt_off0000e274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE274 10876 bytes
SHA-256: 21b4f61bd3f6e206fe51d7d68c6676d072b99937e80229dbdfc8229320facf8d