Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2968a6b9f9c2026…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 11:19:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d36aae32c23de82c86a9ca6793557ec2 SHA-1: bf713fb91257d760688326c655bb5bce5c463f68 SHA-256: c2968a6b9f9c2026833b01d163a7e62ce450af1cb1245da59fb4a47a62487a73
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, disguised as game hacks and free generators. The primary malicious link is http://netcdn.co/app/431946152/best-free-roblox-survival-games-game-hack, which likely leads to a further malicious payload or phishing page. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

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/best-free-roblox-survival-games-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/counter-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/t-shirt-roblox-free-shipping_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-card-collection-hack-2021_GM406889139.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_off00003041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3041 22224 bytes
SHA-256: c4b1769f96755e0fe116e74749ec329bcef47545669d3f3f57ba422ea4b5e256
font_01_sfnt_off000061a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A7 19388 bytes
SHA-256: 81da68a229591c3511c950969f2aa6e7bf74d2fc4012ab37b317d236d7fe7b3c

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