Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bc523ed38467d9…

MALICIOUS

PDF

133.0 KB Created: 2022-07-03 20:56:11 +00:00 Authoring application: ualbene (via PDF Master 1.0.1) First seen: 2026-04-06
MD5: 60b517a1321722a05a3b37bd9d1bb926 SHA-1: 547c18bcd52ab28d68eee4aa5041541410589c4d SHA-256: a8bc523ed38467d93b9ec6d2f7cef25e478ef92e968418d5f454ad915449260a
329 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0005

Heuristics 10

  • 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 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://find24hs.com/travelblogger/ZG93bmxvYWR8eU85TVRWclpXZDhmREUyTlRZM056RTRNVGg4ZkRJMU9UQjhmQ2hOS1NCWGIzSmtjSEpsYzNNZ1cxaE5URkpRUXlCV01pQlFSRVpk/blveiee/cabling/deadlines/giftwrap/evers?special=TmF2aWNhdCBQcmVtaXVtIDExIFNlcmlhbCBOdW1iZXITmF PDF link annotation
    • https://www.jbdsnet.com/wp-content/uploads/2022/07/Altair_Flux_20190011515_X64_Crack_TOP.pdfIn PDF document text
    • https://pzn.by/wp-content/uploads/2022/07/tannenberg_full_crack_hack.pdfIn PDF document text
    • http://jwbotanicals.com/magic-dvd-ripper-keygen-6-1-0-hot/In PDF document text
    • https://rocketchanson.com/advert/key-for-file-scavenger-51-keygen-install/In PDF document text
    • https://mentorthis.s3.amazonaws.com/upload/files/2022/07/56zoryUSONa5w3bLqcEM_03_2c70060239f7bb5b3540a0c5575e505b_file.pdfIn PDF document text
    • https://song-signs.com/savitabhabhiepisode32specialtailorpdffreedownload-hot/In PDF document text
    • https://www.beatschermerhorn.com/?p=11081In PDF document text
    • http://mytown247.com/?p=71959In PDF document text
    • http://thingsforfitness.com/codigoparaactivarnortonutilities1618-best/In PDF document text
    • https://tbone.fi/wp-content/uploads/2022/07/8x10_Tasveer_3_Free_Download_Full_Movie_In_Hindi_Hd_Mp4_FULL.pdfIn PDF document text
    • https://mycoopmed.net/fortnite-game-hack-password/In PDF document text
    • https://mevoydecasa.es/ls-magazine-issue-05-supple-babies-rar-torrent-rar-high-quality/In PDF document text
    • https://fitadina.com/2022/07/03/expressvpn-6-7-1-keys-by-duckyxa-better-crackl/In PDF document text
    • https://social.mactan.com.br/upload/files/2022/07/Z8jAFm2AyiMw3PgmUbSR_03_2c70060239f7bb5b3540a0c5575e505b_file.pdfIn PDF document text
    • https://www.alltagsunterstuetzung.at/advert/physical-chemistry-engel-3rd-edition-solution-manual-verified-2/In PDF document text
    • https://ceowineclub.org/wp-content/uploads/2022/07/amoryani.pdfIn PDF document text
    • https://www.coolshakers.com/wp-content/uploads/2022/07/Native_Instruments_Massive_155_Crack.pdfIn PDF document text
    • http://lighthousehealing.org/?p=2964In PDF document text
    • http://fritec-doettingen.ch/?p=22443In PDF document text
    • http://find24hs.com/travelblogger/zg93bmxvywr8eu85tvrwclpxzdhmreuytlrzm056rtrnvgg4zkrjmu9uqjhmq2hos1ncwgizsmtjsepsyznnz1cxae5urkpruxlcv01pqlfsrvpk/blveiee/cabling/deadlines/giftwrap/evers?special=tmf2awnhdcbqcmvtaxvtidexifnlcmlhbcbodw1izxitmfIn PDF document text
    • https://mevoydecasa.es/ls-magazine-issue-05-supple-babies-rar-torrent-rarIn PDF document text
    • https://warriorplus.com/o2/a/vqvqcq/0?p=17589In 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_off00003a61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A61 84648 bytes
SHA-256: 0b6c48f6a4e931a4572b13bb2af9ad514b0702ea3c747f8534c05d2c57946ed4
font_01_sfnt_off0000c2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C4 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261