Malicious PDF — malware analysis report

Static analysis result for SHA-256 699a8c3f8497eec6…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 09:42:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7fc372478e4cdd45d448338218e50f0c SHA-1: dd048e41291a194210acd259f86cd2e500b65ecf SHA-256: 699a8c3f8497eec6ab3139dde0262852b887bcda2f3e9d6381ee75e6aceab3e7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/spin-and-coin-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/top-10-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-for-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/best-free-roblox-lua-executor_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-do-you-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-march-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-free-join-group_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/dll-hack-for-roblox-assasin_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-roblox-hack-tools_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-bedrock-edition-free_GM479516143.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_002_off000030b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30B2 22704 bytes
SHA-256: 6d26e9d84f31260f576298cde9d88b59cc7f86ddfcf67adc18483f4de102f020
font_01_sfnt_off0000636e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636E 18080 bytes
SHA-256: 012df21d0068cf60c223a53958773a0d059661452b676895ba6a235f4df9029a

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