Malicious PDF — malware analysis report

Static analysis result for SHA-256 310bb3b538fdeeef…

MALICIOUS

PDF

43.4 KB Created: 2021-06-07 08:36:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1f9fdf2ad76963dfda364654ee2839e9 SHA-1: 09c11777651c5c410a6aa441151e690dceb54036 SHA-256: 310bb3b538fdeeefc4a43b07c5a5d4f08bcbdf27c33d8916361ff74f2b249b4f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generators" or "game hacks" for popular games. The document body and embedded links suggest a lure for users seeking in-game advantages, which ultimately redirects to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-free-obc-generator-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/youtube-free-robux-november-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/pokemon-go-free-fire_GM1094591345.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/krnl-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/tiktok-free-98_GM835599320.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-java-edition-download-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
stream_004_off00004f0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F0E 24752 bytes
SHA-256: 7d8cc01e57f349ff51c16a55529c7633331fa343e155ecd215880c46b36c096d
font_01_sfnt_off000086f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 18280 bytes
SHA-256: c4138321055722a574c4d1df9d5315ccaafea2c70c65a0c023be7e253d2a67a4

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