Malicious PDF — malware analysis report

Static analysis result for SHA-256 9547ea6cda8384aa…

MALICIOUS

PDF

41.4 KB Created: 2021-05-16 13:31:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7553af4c3449641b53155e9e597fc470 SHA-1: 4327ef611116ea0c0329cb50bbb059a4a26551a2 SHA-256: 9547ea6cda8384aaf7922b600ee622a4b2130085adbf86336b296f41132e7eee
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/coin-master-free-spins-hack-without-human-verification-game-hack.
  • 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/coin-master-free-spins-hack-without-human-verification-game-hack PDF link annotation
    • https://marielyst-grundejerforening.dk/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/robux-game_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/get-more-robux_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/20210-robux_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
stream_003_off000047e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E1 23780 bytes
SHA-256: 38816e55bb94027e977466af458b754b5aa98682313a334b4bb387d67ab0028c
font_01_sfnt_off00007d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9C 18952 bytes
SHA-256: bbe995309b6761320a89de429a491d1b27525b5c8b766f3497e3cab7bbe78ffa

Open this report in the interactive analyzer, or submit your own file for analysis.