Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85de26cd7b9804d…

MALICIOUS

PDF

117.0 KB Created: 2022-07-25 20:43:12 +00:00 Authoring application: ultlind (via PDF Master 1.0.1) First seen: 2026-05-05
MD5: 2f0c8020150ce7f83db6a318c756f2ed SHA-1: 585b1844bf41ad9e84b236fc09a399ae6247d002 SHA-256: b85de26cd7b9804d15b7d688990b27c5ba9448f4260ffa009f641ef7df141c76
224 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0015

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://xtraserp.com/coppertone/heralding/skiers.filipacchi/guideline/?YWNjYSBzb2xhcml1cyBwdiA4IDU0YWN=ZG93bmxvYWR8dFQ1Y0hacU1ueDhNVFkxT0RJeE9EazROWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA PDF link annotation
    • https://cegcreative.com/2022/07/25/ghajini-full-movie-with-english-subtitles-720122-__full__/In PDF document text
    • https://changehealthfit.cz/wp-content/uploads/2022/07/nerjavo.pdfIn PDF document text
    • https://evol.ai/dgex/index.php/advert/usb-insane-v0-1-ps2-50/In PDF document text
    • https://ursgift.com/wp-content/uploads/2022/07/HDD_Regenerator_2011_Portable_LINK.pdfIn PDF document text
    • http://hotelthequeen.it/2022/07/25/tina-and-the-professor-1995-free-new-downloadrar/In PDF document text
    • http://www.sataal.com/wp-content/uploads/2022/07/derafarr.pdfIn PDF document text
    • https://themindfulpalm.com/fsdreamteam-ground-services-x-gsx-serial-hot-crack-key/In PDF document text
    • https://www.residenzagrimani.it/wp-content/uploads/2022/07/Te_Bashkuara_Dy_Zemra_S_Tremben_Gjithe_Te_Keqijat_I_Largojne_Rapidsharegolkes.pdfIn PDF document text
    • http://www.hakcanotel.com/?p=15235In PDF document text
    • https://pregnancyweekla.com/wp-content/uploads/2022/07/Amiga_KickROM_HOT_Crack.pdfIn PDF document text
    • http://www.male-blog.com/2022/07/25/vadets-module-10-workbook-answers-hit-upd/In PDF document text
    • http://www.chandabags.com/download-gunny-fire-full-crack-verified/In PDF document text
    • https://www.dreessen.info/highlights/camtasia-v2019-0-2-build-4719-x64-setup-crack-latest-updatedIn PDF document text
    • https://awinkiweb.com/wp-content/uploads/2022/07/Fifa_Street_4_Pc_Download_Torrent_Full_Version_NEW-1.pdfIn PDF document text
    • https://marketing6s.com/index.php/advert/altia-design-full-version-download-top/In PDF document text
    • https://zeroimpact-event.com/wp-content/uploads/2022/07/xforce_keygen_64bit_3ds_Max_2018_Free_Download-1.pdfIn PDF document text
    • https://happybirthday2me.com/wp-content/uploads/2022/07/COMPANYOFHEROESTALESOFVALORTRAINER2700_LINK.pdfIn PDF document text
    • https://skepticsguild.com/wp-content/uploads/2022/07/President_Forever_2008_Primaries_Cracked.pdfIn PDF document text
    • https://www.holidaysincornwall.com/wp-content/uploads/2022/07/orlaflo.pdfIn PDF document text
    • https://shahjalalproperty.com/wp-content/uploads/2022/07/malayalambhajanapattukallyricspdf129.pdfIn PDF document text
    • http://xtraserp.com/coppertone/heralding/skiers.filipacchi/guideline/?ywnjysbzb2xhcml1cybwdia4idu0ywn=zg93bmxvywr8dfq1y0hacu1uedhnvfkxt0rjee9eazrowhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbdaIn 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_off000026e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26E3 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000aecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECF 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261