Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2310a0a0ce68a0d…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 01:06:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 15eb340b036ef609f20537ce3484a4ff SHA-1: 1e632f69ab17bd6da3398c03bce3574a59b77181 SHA-256: e2310a0a0ce68a0de513aa1e8c53d10ff8221cede1373dbb5f32e5baeae8de0e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which are SEO-optimized pages promising free game currency or hacks. The primary URL, https://netcdn.xyz/app/479516143/minecraft-bedrock-free-download-pc-game-hack, is directly associated with a game hack lure. The presence of a link farm heuristic and ML classification strongly suggests malicious intent, likely to redirect users to phishing sites or download malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/minecraft-bedrock-free-download-pc-game-hack PDF link annotation
    • http://fmbompastor.com.br/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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_off00004974.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4974 25012 bytes
SHA-256: c76b917688dc4603b5f05896047e30c60114ac20c2f5398092f47fe2afc3b63f
font_01_sfnt_off00008303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8303 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off00008cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDA 18828 bytes
SHA-256: 744b4361c7b50ab0c54bda7008ddb1699961116dc3c405c5ee3c1e77c5f65438

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