Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4fb0454b9d4feb…

MALICIOUS

PDF

42.9 KB Created: 2021-05-20 01:02:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1fe62b983909b65136ffbae528c75279 SHA-1: aa0d6afb255bb48e1e2755f0ee9602343bb4ee6e SHA-256: 0d4fb0454b9d4febdd8d4a3735b478bea3901ea3d0ebbbaf3c8429ca3de82971
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically disguised as 'free generator / game hack' lures for popular games. The embedded URL `https://netcdn.xyz/app/406889139/coin-master-free-2021-spin-link-game-hack` is a primary indicator of malicious intent, likely leading to further malicious content or phishing pages. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-free-2021-spin-link-game-hack In PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/www-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/vpn-for-tiktok-free_GM835599320.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-java-free_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_off00004b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B68 25344 bytes
SHA-256: 72da74c975c3b4549a71a41f9efa54feab013a8c160e331fcd70f2382ab755f9
font_01_sfnt_off00008493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8493 18456 bytes
SHA-256: b7ae3d16bb028351929840db057611194e7c02105e6dbd3e36d0326cc4cd0414

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