Malicious PDF — malware analysis report

Static analysis result for SHA-256 456ed0dc5dcbe28f…

MALICIOUS

PDF

33.0 KB Created: 2021-07-10 02:41:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1294afa528a9822c14a79984d6fbab25 SHA-1: 94193b3a4fb2fa6a70ab461069848d1104baeee3 SHA-256: 456ed0dc5dcbe28f8a6c1422969942cd035df8f9003f16a07afdce6cf1014232
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a critical link to 'http://netcdn.tw/app/431946152/buy-robux-free-game-hack', identified as a malicious redirector. The document body and heuristics indicate a lure for game-related hacks or currency generators, suggesting a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/431946152/buy-robux-free-game-hack In PDF document text
    • https://www.tena-g.hr/files/hack-into-roblox_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-any-item-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/static-moonactive_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-draw-2-roblox-script_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/hack-song-id-roblox-2021_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/hacks-roblox-descargar_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://tena-g.hr/files/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-background-2021-its-free_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/tiktok-free-tv-shows_GM835599320.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-skins-free-girl_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
font_00_sfnt_off00002bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFD 21856 bytes
SHA-256: 7f4c64a2ff89fa5015198efc504e6b01c9d657b17f97ceab46a4dd9a797e913c
font_01_sfnt_off00005c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3A 18896 bytes
SHA-256: ccd8092a29b5f0d371053c4589a9eddce3d36397c57223c60c61c3f4d0a73278

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