Malicious PDF — malware analysis report

Static analysis result for SHA-256 8899a812a75863a2…

MALICIOUS

PDF

41.1 KB Created: 2021-05-17 18:50:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 504faab22012812c530a962ea3424c55 SHA-1: 91e31fdb0fb3883cb693b26a9ffbd2b609becef1 SHA-256: 8899a812a75863a2d61c9cc3949b5ed93ac91dd7e584f4e2b7206cd402c2c0a2
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 0.9971

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/406889139/fbchampion-game-hack PDF link annotation
    • http://arpinoturismo.it/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-spins_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/my-minecraft-account-was-hacked_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_003_off000047b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47B9 24436 bytes
SHA-256: 9926bcccd8522273eb14e7ae9ceebb6c126bba884cf93c6447d2920c9f8e93ae
font_01_sfnt_off00007e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E73 18364 bytes
SHA-256: a6b0af27d4d3b45433f1bf9322c4fc5530f0836706fea914cb1eef9ee3408c10

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