Malicious PDF — malware analysis report

Static analysis result for SHA-256 755f8a6d3a3e5eaf…

MALICIOUS

PDF

46.2 KB Created: 2021-05-14 13:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c86f6b869255c765f873d34c555e9f4f SHA-1: 275fdb9ce6d9385528f9aa51a50af2dcca4d2f6e SHA-256: 755f8a6d3a3e5eafe0a6299b5703e6d354f9c3507ecbef2bf0facb2998b7eef0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure is a link to 'does-roblox-premium-expire-game-hack', which redirects to netcdn.xyz. The document body and heuristics indicate a social engineering tactic to trick users into clicking these links, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.xyz/app/431946152/does-roblox-premium-expire-game-hack In PDF document text
    • http://www.hotel-seminaire.com/images/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://www.hotel-seminaire.com/images/roblox-com-robux_GM431946152.pdfIn 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_003_off00004912.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4912 31780 bytes
SHA-256: 94f68c10331fd5c5a0ddedbc249f94a9fed28824c20c23728cd06ae98bbdadc6
font_01_sfnt_off000090fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FC 18804 bytes
SHA-256: d678fd6a1bc8839950e26379efcb538c09795d0b2d64a023aa376d6a81e8ae9e

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