Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdcac92f0aea5f1a…

MALICIOUS

PDF

48.9 KB Created: 2021-06-11 01:16:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b4649d025a7a899991982f9ea46c9c80 SHA-1: fb8a2472042454e783e82cfbcf54a444fabaef39 SHA-256: bdcac92f0aea5f1ae2270d8b4551b1858165c0a5175ae9365c36a32e5f63e669
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure, 'Roblox Free Cape Catalog', points to a URL that is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.tw/app/431946152/roblox-free-cape-catalog-game-hack In PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/wurst-115_GM479516143.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-giver_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-game_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000507f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x507F 27180 bytes
SHA-256: 170442e57a45d568d849cea91cdcd0f537e9808df83b6db1ad3f7a4c0e651ecb
font_01_sfnt_off00008e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E25 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ACD 18744 bytes
SHA-256: 88802b10714ccf3901a16dbaebda1a98005f71729f266003d29ecb65cc2f9be5