Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f0dcce2a94bf6f…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 21:21:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3633907e49b35b34cac52344ca20dc92 SHA-1: 6d05fb3edf0762533ae85076d2807cb4a81b5a22 SHA-256: 48f0dcce2a94bf6fb23505e0156f4f664cd5b2b476f66d3b60aad7529b052873
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and game-related lures, such as 'Coin Master Free Daily Spins'. These links likely lead to further malicious content or phishing pages. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URLs and heuristic firings clearly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-daily-spins-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/pubg-uc-telegram_GM1330123889.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-dance-animations_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/pubg-600-uc-free-redeem-code_GM1330123889.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-pokeblox-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-no-joke-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-hack-client-pc-download_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-free-download-iphone_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC3 21992 bytes
SHA-256: c263a0579a76aa8f2b3ca451e442cfc80d5c39aa7ad6e0fa1e7637b33efc9cf4
font_01_sfnt_off00005e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 18596 bytes
SHA-256: 9cc88ea50ead10f9f912dbf4be3878b8b313467d4147098bf597ecbc2abb3a30

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