Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c04660428dfa9d6…

MALICIOUS

PDF

46.5 KB Created: 2021-05-16 00:07:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ba001866ba99ebc28d3c86edbd8f8b86 SHA-1: d423422cf62de025ca24a3111cf0b473176e34f6 SHA-256: 1c04660428dfa9d61d6768531def0ca5971526a8774e6908373c1ce0ce4db7b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of 'free game hacks' and 'robux generators'. The heuristic firings indicate that the document is designed to lure users to these malicious sites, likely to download further malware or engage in phishing. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/how-to-get-free-robux-com-game-hack In PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-version-download-2021_GM406889139.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_off000048c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C0 27480 bytes
SHA-256: acc929c8da7706c092551ba32c200ec4e24aa1de1194010dff45a5ac31735caa
font_01_sfnt_off00008575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8575 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9286 18544 bytes
SHA-256: 592d037155b891bbb2f70d3f14a8a619d2fef64eb32d8f0fc2e46f6e8e925839

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