Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20058aa44b0ac2e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 02:15:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 184311618688d8bca14fc952ce513b7b SHA-1: 8b048dc4284126160b73b18826036057a310c8f2 SHA-256: c20058aa44b0ac2e192da51a1504b3789572c0f76d152cbfb97fa1f70f497f2b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure URL is http://netcdn.tw/app/479516143/how-do-you-download-minecraft-for-free-game-hack. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or scam attempt, likely intended to lead users to download further malware or compromise their accounts.

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-do-you-download-minecraft-for-free-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-a-roblox-account-with-cookie-editor_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hack-btools-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-gameplay-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-any-car-free-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-put-scripts-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_off0000321b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321B 22268 bytes
SHA-256: e5607ac89b21ac98c833f9c3858bc051677d1a827cd65cd971b03fd2e24df439
font_01_sfnt_off00006374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6374 18880 bytes
SHA-256: ae8a28a4719fe920465bfa101b0c55ce4e50a49314e3e01958f41ab81cd87400

Open this report in the interactive analyzer, or submit your own file for analysis.