Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd090a46b31fe2df…

MALICIOUS

PDF

46.0 KB Created: 2021-05-14 19:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 67a480018662fb1db3b1217dac7865d3 SHA-1: 80f8222f6738436a3e48ac75d49c7d733aa6d00e SHA-256: dd090a46b31fe2dff0eb5928b5a7f657518874d277731343c76ece213859c0af
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free generator / game hack" which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/479516143/best-free-minecraft-hacked-client-game-hack PDF link annotation
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/www-rubux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/www-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BAC 26004 bytes
SHA-256: dba6de22f08fff9f7ff614efb6dfc46310421b1ec8d637ec49b5f6d2926e26c1
font_01_sfnt_off0000877d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877D 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off000091ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EF 18200 bytes
SHA-256: dee6b3909f49c7ddbb1ab18ee008f1775ca59041fcbdd753e186a80ce5ffdd4d

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