Malicious PDF — malware analysis report

Static analysis result for SHA-256 d077b241a23cfff9…

MALICIOUS

PDF

85.5 KB Created: 2021-03-25 05:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 43e6c2eb7102de392a0e6fe0a814faee SHA-1: e31520db1283ae67fe0f6c49f4a2d56c5f102a55 SHA-256: d077b241a23cfff9f7ae362c3b606020126bad3b4a11c62248dc9cd784f5a1fe
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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.
  • 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.
  • 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://cdn-cms.f-static.net/uploads/4473616/normal_605bed02d31d4.pdf In PDF document text
    • https://s3.amazonaws.com/sewamos/wcab_stipulation_and_order_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369322/normal_6041381e74889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419820/normal_601a486901677.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402940/normal_5fe07e81d1f98.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/ganejumarenivazaxalokusos.pdfIn PDF document text
    • https://kekiwudegabute.weebly.com/uploads/1/3/0/8/130813612/159ccc06531.pdfIn PDF document text
    • https://fenogelojana.weebly.com/uploads/1/3/4/9/134904444/1c54869b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421957/normal_605bebf629e44.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/what_size_tires_for_2009_toyota_rav4.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/rue_des_cascades_yann_tiersen_sheet_music.pdfIn PDF document text
    • https://lumewogomor.weebly.com/uploads/1/3/4/3/134319436/5d192cdf62757.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/32470722703.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/blackmail_1973_all_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/licsw_massachusetts_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/71998813151.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421959/normal_6048318474154.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/concept_paper_template_for_project.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379842/normal_60414f24c8ebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450244/normal_601e7a707820b.pdfIn PDF document text
    • https://xadafujivesa.weebly.com/uploads/1/3/1/3/131397927/2850810.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/sansa_clip_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/bandook_chalegi_video_hdvd_9.pdfIn PDF document text
    • https://crophysi.ru/123?utm_term=bunty+aur+babli+all+song+mingIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00011320.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00011320.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_off00011320.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11320 5296 bytes
SHA-256: 9c32a160b59fb15cf0a4dee62612805b847b1e9de5eeb9c65c8ec22d59160b53
font_01_sfnt_off0001251e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1251E 10840 bytes
SHA-256: 13e4cc757cbfd4e0eeba68a76b74200f100a7b554423619d3cc543553dbe0f5c