Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa874f2fa3efeadb…

MALICIOUS

PDF

45.2 KB Created: 2020-11-08 22:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: e915cff51c5f76aed55e2c8e981950ab SHA-1: 34401656003e5423677bea979997a3909654c625 SHA-256: aa874f2fa3efeadb9086ff3623d3f9ad4a4ad3ea364dceb10ea0bf8aefa30547
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffnew.ru/123?keyword=algebra+with+pizzazz+answer+key+pg+150 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410727/normal_5f9eccbfaae7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379601/normal_5f8d74047355b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404755/normal_5fa2a3db29c7b.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/bakoloj/gifufuzavezix.pdfIn PDF document text
    • https://kanamuj.files.wordpress.com/2020/11/wheatstone_bridge_lab_report.pdfIn PDF document text
    • https://tojupeti.files.wordpress.com/2020/11/rainbow_six_siege_unlock_all_operators.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8da04184-f17d-41c1-ae9a-77ad0b5f3dcb/watch_tiger_zinda_hai_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/sotedofobeluximowutikakat.pdfIn PDF document text
    • https://goretixerufa.files.wordpress.com/2020/11/bifoduwonidovabopemek.pdfIn PDF document text
    • https://romekelisefo.files.wordpress.com/2020/11/nitunawikudaremutujozudok.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/27745444117.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/nojukegozopu.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/coffee_shop_business_plan_financials.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/on_the_attendance_worksheet_in_cell_l5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b164996f-c167-4a10-9bbf-cefd09b156fd/85992244898.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_off00006da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA8 5836 bytes
SHA-256: 9bee7a4c3dc7f8e46cf97d77aa17f9f5a29b17da5d0ab71e6e13e9a23ec0790e
font_01_sfnt_off000081ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AD 11472 bytes
SHA-256: fe2efa7319a66a57fbc7ceca6bc6643cf4343bae027d9ae4b4603edd1b1ec450