Malicious PDF — malware analysis report

Static analysis result for SHA-256 4846875101972a85…

MALICIOUS

PDF

45.5 KB Created: 2021-05-18 02:40:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 392ecf0028e361a6ac7ee28e036def87 SHA-1: 0e6db508ef23a19134e211262640826b358e17d3 SHA-256: 4846875101972a8502004162af01b9d2797c37cf4b7dd9f8a0e744b9efa14516
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for game hacks and free currency, directing users to a malicious redirector. The document contains numerous links to other PDFs hosted on dientubentre.com, likely serving as further lures or downloaders. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/minecraft-building-hacks-game-hack In PDF document text
    • https://dientubentre.com/public/upload/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/earn-robux_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/link-coin-master_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/earn-roblox_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/get-robux-now_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004be1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE1 24976 bytes
SHA-256: 6a2a4b4b4d2b4c8a87175ec72a85e36ccbb1779e6e6c33590ad9b1f556cee244
font_01_sfnt_off0000847b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847B 2880 bytes
SHA-256: 02b7ca526f89db31b49edc0acd47d295f0115bdf51b0ad867f141dc1e3b90245
font_02_sfnt_off00008e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E59 18628 bytes
SHA-256: 03be4b6b10a4c687c6c89c16a3bf013511456428a76c01e3ee63370f4522cf94

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