Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac28e4ae500f1c4…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 08:00:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 0388fd18db36cad6939501094ff5372c SHA-1: 5d8f525c92854350208caff40012c1336c5718a7 SHA-256: 2ac28e4ae500f1c494ff3a0d96d13a958534864709157f2ea40c69a53cc7d40f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game cheats and currency. The heuristic firings indicate that these links are part of a known malicious redirector chain. The document body and embedded URLs suggest a lure for obtaining in-game currency or cheats for games like Roblox and Coin Master. No scripts were extracted from this sample.

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/retail-tycoon-roblox-money-cheat-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-best_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-roblox-http-catchsatoshionline-robuxrobloxg_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-no-siging-i-n_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/der-grste-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-vip-in-miner-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-java-edition-free-trial_GM479516143.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
font_00_sfnt_off00002f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3B 22408 bytes
SHA-256: 8733852f6b4fa0d7e514399c95ffbb730f283a48e7bf71f5685fef0e35fa98b9
font_01_sfnt_off0000612a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612A 19252 bytes
SHA-256: bfb1d1e916f6f579cc0c6094e620257039beb3d16304e28d57cd2b5d9e5de9d5

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