Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4f0ff8e56857d8…

MALICIOUS

PDF

38.3 KB Created: 2021-05-25 07:05:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cbc3a2abb52397096cd666ea93cdcdea SHA-1: fbd969c38480a0dae60995621dc49ebb8a79c73d SHA-256: 1d4f0ff8e56857d8e800d5e764756512f38e0532109dc81af84e4121217391f4
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and cheats, such as Minecraft and Robux generators. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of a 'download button' lure indicate a social engineering attempt to trick users into clicking malicious links. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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 https://netcdn.xyz/app/479516143/get-minecraft-windows-10-free-game-hack PDF link annotation
    • https://hekl-software.de/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://code.giftcards.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003480.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3480 30796 bytes
SHA-256: 526f3178f8ae9f6d03b07e4673f33cbb641dd28f7632fa612706022b51cc45cd
font_01_sfnt_off000073a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A0 18524 bytes
SHA-256: afbe33bac95265c6f2b043ad9a50b9956be980e83b0cfba0a93a34130b59281e

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