Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb8f53a91a10181f…

MALICIOUS

PDF

44.9 KB Created: 2021-05-17 08:02:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 369fd5318aeae97466b98bbf60041938 SHA-1: 6b378bfda992cd3efd6edf12c43087c905993177 SHA-256: eb8f53a91a10181ff85679d4a143c0d4b909cbd85b2601412ead9e61347b01e9
160 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, including a known malicious redirector, under the guise of providing game hacks and free currency. The document body and embedded URLs suggest a lure for users seeking cheats or exploits for popular games like Coin Master and Roblox. The ML classifier strongly indicates maliciousness, and the presence of redirector links points towards a phishing or malware distribution workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/easiest-coin-master-hack-game-hack In PDF document text
    • http://pythonbikers.de/images/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pythonbikers.de/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://pythonbikers.de/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://pythonbikers.de/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/coins-master_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/free-bedrock-minecraft_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004843.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4843 26552 bytes
SHA-256: 6068396297b0ae1d445a34ecf3f8d0d957da8a1d78b176e2731537ed8abf46d8
font_01_sfnt_off000083e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E0 17716 bytes
SHA-256: 2777df0864118f7a8b0836e6f140f12d2c0b51bcfdff72c423501d2323673959
font_02_sfnt_off0000a438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA438 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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