Malicious PDF — malware analysis report

Static analysis result for SHA-256 0351f92f71f45f58…

MALICIOUS

PDF

36.4 KB Created: 2021-07-05 19:18:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7138f79911493e220711c69b5f671c27 SHA-1: aac07ba3a51fe8d2b1066e60ea6adb850379b9ab SHA-256: 0351f92f71f45f5818bc313aaa4973061b8364489a8cad540ef135e110f10e2f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links, with a primary link pointing to a site offering 'free roblox game hack'. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified it as a game hack redirector lure. The document's content and structure indicate an attempt to trick users into visiting malicious URLs, likely leading to further malware downloads or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • 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://netcdn.tw/app/431946152/e-free-roblox-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/pubg-uc-daraz_GM1330123889.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-trick-deutsch_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-download-free-chip_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-spider-man-mask-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-para-roblox-flood-escape-2_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/new-roblox-exploit-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-admin-commands-roblox-download_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-accounts-with-robux-real_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-into-someones-roblox-account-2021-on-ipad_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/my-free-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-big-paintball-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000039a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39A6 22216 bytes
SHA-256: 7382cbe66c76b343f109e6e7af0bdd179743d0420ec0e9b7c9a1b4be876a2417
font_01_sfnt_off00006aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAC 18652 bytes
SHA-256: 491e525d3204e4009c2358898e88a516766cfb2a3bec72a07ee9be2d9588b88d

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