Malicious PDF — malware analysis report

Static analysis result for SHA-256 576798366bd03cff…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 22:19:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4e3d6daba7f1a6308755e9680ece79d4 SHA-1: 74c1a4890d7b326e47f00e342fb0f37c856e557c SHA-256: 576798366bd03cffc272b0dc05ea9e2e230589e5b86f287bcfb5d59d2df30955
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a lure for 'free Robux' and game hacks, strongly suggesting a phishing or scam attempt. The primary URL, http://netcdn.tw/app/431946152/free-robux-no-survey-game-hack, is likely the destination for this lure. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to a malicious website.

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/free-robux-no-survey-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-robux-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/startingsploit-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-for-free-robux-without-veirfication-required_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-imagine_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
font_00_sfnt_off00002d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4B 21720 bytes
SHA-256: 427da73fa07caa1111bf5dfb4c2c07bd25ceb8e7947712f6773969c4102422f7
font_01_sfnt_off00005d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2C 19012 bytes
SHA-256: 4e4ee538de79ec7e4a2325d57c934275716f5f92a64f1321ae55620a5fe6760f

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