Malicious PDF — malware analysis report

Static analysis result for SHA-256 efbc59bf90c918c6…

MALICIOUS

PDF

129.3 KB Created: 2022-07-20 10:52:42 +00:00 Authoring application: harsmarj (via PDF Master 1.0.1) First seen: 2026-05-17
MD5: 915e8e32fbaf533b6fc63620fdea3d27 SHA-1: 7f7233fa13ca0e0a95af2b056f99ce37b42647c6 SHA-256: efbc59bf90c918c613cd5f84c859fe58cd4a2daa1314ac681f52bb71f9ccb406
224 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0006

Heuristics 7

  • 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.
  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
    PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://bestentrypoint.com/gadgetology/marlies=treason.V2FyRmlyZSBPcmlnaW5hbCBWaWRlbyBHYW1lcyBTb3VuZHRyYWNrV2F?neurologists=aaca&ZG93bmxvYWR8M2RZYm0xMGJueDhNVFkxT0RJeU1EZzJObng4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA=proportion PDF link annotation
    • https://1z82.com/wp-content/uploads/2022/07/Gizmos_Spooky_Adventures.pdfIn PDF document text
    • https://fitenvitaalfriesland.nl/wp-content/uploads/2022/07/Beyond_A_Steel_Sky_Prologue_Comic_Book_Nulled__Free.pdfIn PDF document text
    • http://yotop.ru/2022/07/20/mutland-universal-keygen-license-key-free-download/In PDF document text
    • http://www.picturestoheaven.com/wp-content/uploads/2022/07/heljam.pdfIn PDF document text
    • https://xn--80aagyardii6h.xn--p1ai/conductor-content-pack-1-cheat-code-mac-win/In PDF document text
    • https://teenmemorywall.com/synth-riders-muse-quotthe-dark-side-quot-serial-number-and-product-key-crack-2022/In PDF document text
    • http://peninsular-host.com/autosmotos.es/advert/tiger-tank-59-a-battleship-mp062-hacked/In PDF document text
    • https://armslengthlegal.com/wp-content/uploads/2022/07/Command_HQ.pdfIn PDF document text
    • https://koshmo.com/?p=51497In PDF document text
    • https://aimagery.com/wp-content/uploads/2022/07/ransamo.pdfIn PDF document text
    • https://dsdp.site/it/?p=37335In PDF document text
    • https://sprachennetz.org/advert/sand-castle-crack-torrent-for-windows/In PDF document text
    • https://thedockage.com/wp-content/uploads/2022/07/Just_a_Chest.pdfIn PDF document text
    • https://cineafrica.net/wp-content/uploads/2022/07/afrbunn.pdfIn PDF document text
    • https://greenboxoffice.ro/rtsm-mem-patch-activation-key-free-download-pc-windows/In PDF document text
    • http://vietditru.org/advert/alice-in-wonderland-a-jigsaw-puzzle-tale-trainer-free-for-pc/In PDF document text
    • https://zardi.pk/wp-content/uploads/2022/07/taledm-1.pdfIn PDF document text
    • https://conversietopper.nl/fantasy-grounds-d-ampd-adventurers-league-09-06-infernal-insurgency-cheat-code-torrent-activation-code-updated-2022/In PDF document text
    • http://spacebott.com/?p=13647In PDF document text
    • https://amplefair.com/maize-nulled-serial-quantity-full-torrent-for-pc/In PDF document text
    • https://fitenvitaalfriesland.nl/wp-In PDF document text
    • https://teenmemorywall.com/synth-riders-muse-quotthe-dark-side-quot-serial-number-and-product-In PDF document text
    • https://conversietopper.nl/fantasy-grounds-d-ampd-adventurers-league-09-06-infernal-insurgency-In PDF document text
    • http://bestentrypoint.com/gadgetology/marlies=treason.v2fyrmlyzsbpcmlnaw5hbcbwawrlbybhyw1lcybtb3vuzhryywnrv2f?neurologists=aaca&zg93bmxvywr8m2rzym0xmgjuedhnvfkxt0rjeu1ezzjobng4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda=proportionIn PDF document text
    • http://www.tcpdf.orgIn 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/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000538e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538E 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000db7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7A 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261