Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad20c93df9a622e…

MALICIOUS

PDF

43.9 KB Created: 2021-06-10 18:30:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e1e8308a853b3527bae036960996eb80 SHA-1: 91386566a3526389c33eea4a9dc885ff182af626 SHA-256: bad20c93df9a622e0efd9cadb0c818eefe2d16ac1dc3cfbef6006c3591a89696
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 0.9865

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.tw/app/431946152/free-roblox-custom-templates-game-hack PDF link annotation
    • https://ogm-goettingen.de/images/roblox-com-free-for-mobile-24-com_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-hair-girl-free_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/downloading-roblox-link-free-like-no-money-needed_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/10m-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-link_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-gameplay_GM406889139.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_004_off00004f82.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F82 24280 bytes
SHA-256: c8895309478bd65442c9d78aa42d41e4f86d62239e03fb7a3451acdbb56876e6
font_01_sfnt_off0000871f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x871F 18856 bytes
SHA-256: 18bf27c88efb992990d9b0f55c9afbde73f7a17684d871108dbf4aae11d4b074