Malicious PDF — malware analysis report

Static analysis result for SHA-256 60aabdcdeb45b007…

MALICIOUS

PDF

36.8 KB Created: 2021-07-05 18:45:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 743236b2838a4dd9c92743bcb938fd49 SHA-1: 6aa0c307801c9e2489dcc9daeb911ccbd9af83f5 SHA-256: 60aabdcdeb45b007932c77d4a09d5af9053dde6be4500525a5f8b4dba0715dda
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using the promise of free game currency and hacks to entice users. It contains multiple links to known malicious redirectors and further PDF documents hosted on suspicious domains, indicating a chain of malicious content delivery. The primary malicious link identified is http://netcdn.tw/app/406889139/free-promo-codes-for-coin-master-game-hack, which likely serves as an initial entry point to a more complex attack chain.

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.tw/app/406889139/free-promo-codes-for-coin-master-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/olzer-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/como-hackear-cualquier-juego-en-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-is-hacker_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/pant-free-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/robux-game-com_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-obc-robux-inspect-element_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/2021-roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-tiktok-likes-youtube_GM835599320.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/skywars-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-broken-bones-cheat_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/dragon-ball-x-in-roblox-hack_GM431946152.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_off00003946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3946 22976 bytes
SHA-256: 066233de4f6c6e1df032935bb813b70181c25e03f9c6c3c6ec8b02c5f79df986
font_01_sfnt_off00006ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCB 18588 bytes
SHA-256: 7ce884935036d58adbe7dbe1e099fe56968cc41941ec371068109c2cb9027b3d