Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7d4ae2e2c6fcf8…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 19:24:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e16fa9a7dfce6b77fd106b4e77417899 SHA-1: 1d43567e6405da5150d7aec4f324e2df3039dba0 SHA-256: 4f7d4ae2e2c6fcf84d24eeb3b6dedc9f0260f27b7fc19506af3d9f33209af09c
160 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body also contains the same URL, reinforcing the lure. This indicates an attempt to trick users into visiting a malicious site, likely for further exploitation or malware delivery.

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/hacks-para-juegos-de-roblox-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-hack-the-roblox-developer-console_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-high-school-how-to-get-free-gear_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-hack-2021_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_off0000322a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322A 21732 bytes
SHA-256: b83998ca59d90bacd11f7b535fd659dab01192da2a2a0b1191c9d2de8342a363
font_01_sfnt_off00006210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 19096 bytes
SHA-256: fd06ff4cfe79c17f7d31677bf6186740c754695e49309b7116280628bd88b66f

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