Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f415d3227af1739…

MALICIOUS

PDF

46.7 KB Created: 2021-05-12 21:11:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e586c2efdd8fc09c2eebf0d3a215d9f2 SHA-1: a98e2377f0b11033f74e41ed4358541edf893781 SHA-256: 0f415d3227af1739fbdc403ab6f6b8c4d2b45346f7d8d09fccd4b4efefa73605
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 0.8948

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/431946152/free-robux-com-roblox-game-hack PDF link annotation
    • http://www.salwangurgaon.com/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-spin-coin-master-2021-link_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_off00004afb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFB 25768 bytes
SHA-256: 99a57ce1f26cf3d53d9a5c0d0687e725a9f799c53e5f49c2d20cb0ed8fb71494
font_01_sfnt_off00008756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8756 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000093fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FE 18348 bytes
SHA-256: 0a91f6cfdfc59c313b80ddaaf1db47d93b267e297f9a4be9f2abca10b90eba79

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