Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c508fde53f9e712…

MALICIOUS

PDF

45.3 KB Created: 2021-05-11 02:33:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 54efb28208785b3a2787761e6ce2b869 SHA-1: bc5d938a8bfd511682d4735f31a500e7eb8e40f1 SHA-256: 9c508fde53f9e712ba1a6c7e020aac4bcbfc9824aa39695ff0ce73b622845e29
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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 0.9507

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/earn-free-robux-game-hack PDF link annotation
    • http://mobtakerancell.ir/assets/uploads/pages/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/give-me-robux_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://mobtakerancell.ir/assets/uploads/pages/files/free-spins-for-coin-master_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_off00004a38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A38 25288 bytes
SHA-256: 10fda9f09aeea9593cbcef6b6a9c6f0927c4ecc17cb6e07d37edde154a4f6388
font_01_sfnt_off000084d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D9 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC3 18244 bytes
SHA-256: 032754c85be32afc54ce42ff57082bfda3d842c531a4409870c690b3212eb60e

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