Malicious PDF — malware analysis report

Static analysis result for SHA-256 8904e060cead46cb…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 16:05:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d1472b790606e00321eb3b8a0a5ecfdf SHA-1: 530f1c88742892e8b4a61d2f0d047abf18ca5f8f SHA-256: 8904e060cead46cb597fdca61ed67b3bf0db3a5e4f9a22a6a9796a76924885de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting "free generator / game hack" lures. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting these sites. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a high likelihood of further malicious activity, such as downloading additional payloads or redirecting to credential harvesting pages.

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.co/app/431946152/free-robux-computer-hack-game-hack In PDF document text
    • http://hk-kan.org/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://hk-kan.org/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/login-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/apoc-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/hacks-para-dungeon-quest-roblox-2021_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/pubg-uc-yatrma-sitesi_GM1330123889.pdfIn PDF document text
    • http://hk-kan.org/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/robux-free-gift-card-org_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC9 22472 bytes
SHA-256: f5f2c0d174fd82aa687c0e07fcb6ed9f4a62f3f603370fb2ef3e3d34a148a72a
font_01_sfnt_off00005f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F51 19240 bytes
SHA-256: 14f3b5a3c510dd1a94d5f85f3bdb8bf52f5378ef70afc9a2fc0e8522f43e647e

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