Malicious PDF — malware analysis report

Static analysis result for SHA-256 170b22ce2b56b306…

MALICIOUS

PDF

32.1 KB Created: 2021-07-05 00:44:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9e35b9371bb717e2968cf4af56fb1729 SHA-1: 0bba57899c0074ecc7aea2fec5036dcd2a77bf0e SHA-256: 170b22ce2b56b306ffdba290910a1e5f3b9a842c80b699a367eb7c6a6a5859c7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs that lure users with promises of game hacks and generators, such as 'tiktok-free-website-game-hack'. The heuristic firings confirm that the PDF links to external websites with a 'free generator / game hack' lure. While no scripts were explicitly extracted, the nature of the lures suggests a phishing or scamming attempt, likely leading to further malicious downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/835599320/tiktok-free-website-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/bloxland-promo-codes-2021-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-hack-roblox-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-admin-commands-roblox-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-one-piece-millennium-stats-hack-script_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/viper-venom-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-be-an-oreo-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/robux-hack-gratuits-apk-mods_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-hack-robux-420-apk-aptoide_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/watch-ads-for-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/games-on-roblox-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/pastebin-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/why-do-my-roblox-hacks-crash_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-robux-javascript-2021_GM431946152.pdfIn 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
stream_001_off00002ad6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AD6 21776 bytes
SHA-256: e17a6efd4088c415fc6def18a1880caa013551b3def9d64e23de32155b54cf46
font_01_sfnt_off00005ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC2 18328 bytes
SHA-256: 054420e37e39877a41ca93a2e717b56fa52cdefaf0db7b400f7be62a0b4c36a9

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