Malicious PDF — malware analysis report

Static analysis result for SHA-256 70567badb7188f57…

MALICIOUS

PDF

35.8 KB Created: 2021-06-26 23:06:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: c3e8f160dd9b1ade835c61292e66f9ea SHA-1: ee1eb259a0112bc69805c714e399a781f5f1eebe SHA-256: 70567badb7188f57d95dc2bea30123907a8e49e9507442818426f1dddfb8c0b2
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. This link, http://netcdn.co/app/431946152/non-blocked-cheat-engine-roblox-game-hack, is the primary IOC. The document's content and structure strongly suggest a social engineering lure to trick users into visiting malicious sites, likely for further malware delivery or exploitation.

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/non-blocked-cheat-engine-roblox-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/vidio-how-to-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cm-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/super-power-training-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/wurst-download_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/25-free-spins-coin-master_GM406889139.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_off00003260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3260 23032 bytes
SHA-256: 6b5e8ec67cbec9730b0e65745b811b27577c7a8a01bdca3d173d0db456ae2afd
font_01_sfnt_off0000665e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665E 19220 bytes
SHA-256: b9c5100f1e201f1fd4d8c6e1f14951d8713a69de471a91589300e02714c788fa

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