Malicious PDF — malware analysis report

Static analysis result for SHA-256 a592552f5e4c15ce…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 22:14:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7b0b3c16b896f86cf84b1212b01e8415 SHA-1: d173faffd880c8429ce65fec8db89b5d8667f5e1 SHA-256: a592552f5e4c15ce6d455760ead0e5e8263793dc21817bab685661572ce9f051
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a lure to trick users into visiting these malicious sites, likely for further malware delivery or credential harvesting. No scripts were extracted, but the presence of malicious links and the ML classifier output indicate a high likelihood of malicious intent.

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/roblox-how-to-get-obc-for-free-lifetime-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-games-yow-can-make_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/pepsi-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-card-codes-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-clothes-codes-for-roblox_GM431946152.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_off000030a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A2 22280 bytes
SHA-256: 23d387f4fefe8bf896a7ca149749e3425d31bbca3c045f93ea1677c6a2fac44a
font_01_sfnt_off000061f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 19300 bytes
SHA-256: cc065a1f9651a5da94eab7a9d9050e0926580ea59a653e8a029f8f8ba14edaf3

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