Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2cd80c583c00b79…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 22:13:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e8596e1565076ad56d351092b766e771 SHA-1: fb2ab9dca2754befeec0c428b4a8e5a6af5e5988 SHA-256: f2cd80c583c00b793010ddf383d055866214a994c2f766f0137b160cd66ae6fb
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of providing free game hacks and mods. The heuristic firings indicate that this PDF is designed to lure users into clicking these links, which likely leads to the download and execution of further malicious content. No scripts were extracted, but the embedded URLs and redirector heuristics strongly suggest a malware distribution workflow.

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/479516143/how-to-get-free-mods-in-minecraft-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/tiktok-2021-free-download_GM835599320.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/top-10-roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/pokemon-go-free-roam_GM1094591345.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-draw-on-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-catalog-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/earn-robux-today-free-wall_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_off000032d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D5 21736 bytes
SHA-256: c676c744192486ee1e7f896567733dcc0cc45ae0d9169d6056d76c9b948966c2
font_01_sfnt_off0000628b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 18336 bytes
SHA-256: 70b6f7d086f064c688a26537650d273c761baed84510a3b1aafdb5c6054c2f47

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