Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bb9427bee3ea89…

MALICIOUS

PDF

121.7 KB Created: 2022-09-09 08:28:12 +00:00 Authoring application: ophdri (via PDF Master 1.0.1) First seen: 2026-04-02
MD5: 457099e356463a21f09ea51db422b08e SHA-1: 2c2f60e4fa80101268bf432e689d3b78dcbf12d5 SHA-256: 88bb9427bee3ea89866a6c9345a3de2adab02f47de1e7d49bd07936199f3cfa3
204 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0006

Heuristics 7

  • 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 links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • 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/distal/Q1MtMjIwMCBJY29tIElDLTIyMDBIIFByb2dyYW1taW5nIFNvZnR3YXJlIFNldHVwIEZyZWUQ1M?osgood=dysmorphic.payback&oyamel=ZG93bmxvYWR8MmFiTldONE4zeDhNVFkyTWpZNE1ETTVNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA.tradecraft PDF link annotation
    • https://topdriveinc.com/wp-content/uploads/2022/09/Hoo_Technologies__Net_Meter_36_build_437_Crack_Serial_Key.pdfIn PDF document text
    • http://shop.chatredanesh.ir/?p=119882In PDF document text
    • https://www.reptisell.com/clone-cd-4-2-0-2-clone-serial-new-download/In PDF document text
    • https://michoacan.network/wp-content/uploads/2022/09/Mercalli_V2_Pro_Download_BETTER_81.pdfIn PDF document text
    • http://vesinhnhatrang.com/?p=17840In PDF document text
    • https://pure-temple-48889.herokuapp.com/The_Sims_3_All_Expansions_Stuff_Packs_free_download.pdfIn PDF document text
    • https://www.techclipse.com/access-mde-unlocker-v3-20-crack-portable/In PDF document text
    • https://rastaan.com/wp-content/uploads/2022/09/takwyne.pdfIn PDF document text
    • https://xn--80aagyardii6h.xn--p1ai/honestech-tvr-3-0-top-free-download-for-windows-7/In PDF document text
    • https://www.webcard.irish/csi-licence-generator-etabs-9-7-3-rar-hit-patched/In PDF document text
    • https://www.atlaspain.it/signcut-pro-crack-fixed/In PDF document text
    • http://www.vinergie.net/wp-content/uploads/2022/09/Pimsleur_Greek_2_Torrent_Download_High_Quality.pdfIn PDF document text
    • https://nkrumaists.com/wp-content/uploads/2022/09/aridar.pdfIn PDF document text
    • https://blu-realestate.com/updated-download-simda-versi-2-1/In PDF document text
    • https://intense-headland-14957.herokuapp.com/Visual_MP3_Splitter_And_Joiner_V60_Patch_By_ChattChitto_Full.pdfIn PDF document text
    • http://steamworksedmonton.com/vray-23-for-3ds-max-2013-64-bit-free-better-download/In PDF document text
    • https://salty-oasis-65733.herokuapp.com/wesleth.pdfIn PDF document text
    • https://careersguruji.com/werkstatthandbuch-suzuki-burgman-125-deutsch/In PDF document text
    • https://gretchenscannon.com/2022/09/09/instructions-for-samsung-e1200-arabic-firmware-exclusive/In PDF document text
    • http://ourwebsitetest.es/?p=22493In PDF document text
    • https://topdriveinc.com/wp-content/uploads/2022/09/Hoo_Technologies_In PDF document text
    • https://michoacan.network/wp-In PDF document text
    • https://pure-temple-48889.herokuapp.com/The_Sims_3_All_Expansions_In PDF document text
    • https://xn--80aagyardii6h.xn--p1ai/honestech-tvr-3-0-top-free-download-In PDF document text
    • https://www.webcard.irish/csi-licence-generator-etabs-9-7-3-rar-hit-In PDF document text
    • http://www.vinergie.net/wp-content/uploads/2022/09/Pimsleur_Greek_2_In PDF document text
    • https://intense-headland-14957.herokuapp.com/Visual_MP3_Splitter_AndIn PDF document text
    • http://steamworksedmonton.com/vray-23-for-3ds-max-2013-64-bit-free-In PDF document text
    • https://careersguruji.com/werkstatthandbuch-suzuki-In PDF document text
    • https://gretchenscannon.com/2022/09/09/instructions-for-samsung-In PDF document text
    • http://xtraserp.com/distal/q1mtmjiwmcbjy29tieldltiymdbiifbyb2dyyw1taw5nifnvznr3yxjlifnldhvwiezyzwuq1m?osgood=dysmorphic.payback&oyamel=zg93bmxvywr8mmfitldone4zedhnvfkytwpzne1ettvnshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda.tradecraftIn PDF document text
    • https://xn--80aagyardii6h.xn--p1ai/honestech-tvr-3-0-top-free-downloadIn PDF document text
    • http://www.vinergie.net/wp-content/uploads/2022/09/pimsleur_greek_2_torrent_download_high_quality.pdfIn 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_off0000284d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x284D 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000b039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB039 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261