Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba5bf1f7fd5c1ae…

MALICIOUS

PDF

48.7 KB Created: 2021-06-13 19:51:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b5e27b2444db3fbfbe154a0d6f4d4f56 SHA-1: e7090ea726396e7db40fd469f8d1dc2c24c18628 SHA-256: 7ba5bf1f7fd5c1aec01c126a37d3ac28f4a5e005533d75affa548b1c7278296e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on potentially harmful content related to game hacks. The presence of a download button lure further supports the malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/can-you-actually-hack-roblox-for-rubox-game-hack In PDF document text
    • https://wandpiraten.de/images/godmode-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/robux-page_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/roblox-script-executor-download-free_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/roblox-project-pokemon-exp-hack_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-fly-hack-on-roblox-with-cheat-engine-63_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 36740 bytes
SHA-256: 4ee43f467d1e46022ba702858339492396f3fbd379b233f728e45ce2b0f973f9
font_01_sfnt_off00009ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC6 18932 bytes
SHA-256: b6e73d05a32932e1b00a352f88b3ed9b1b22cb644b12bcde040d6896cb2e5025

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