Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e43a953feb3f16e…

MALICIOUS

PDF

43.8 KB Created: 2021-05-12 03:04:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f1a6b93dbbebcfd7e076077140344525 SHA-1: c91b57f7008592de281bbe9c828efbb0e9aaff69 SHA-256: 3e43a953feb3f16ed2abad9b1aae592da222e5427b0ff3047ed6c5ccd5471076
200 Risk Score

Malware Insights

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

The PDF document contains multiple links that impersonate Microsoft and lure users with promises of game hacks or free virtual currency, directing them to malicious redirector infrastructure. The primary malicious URL identified is https://netcdn.xyz/app/431946152/rape-simulator-game-hack, which is associated with credential phishing and potentially further malicious activity. No scripts were extracted from this sample, but the document structure and embedded URLs strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/rape-simulator-game-hack.
  • 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 https://netcdn.xyz/app/431946152/rape-simulator-game-hack In PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-spins-only_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
stream_003_off000047e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E2 28208 bytes
SHA-256: ba72a6a79d70df14a0a2c76f39806c71271dc1a893dcaddb8f94edee1f1dea0d
font_01_sfnt_off000088a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A4 18444 bytes
SHA-256: b480e4b898178c1e4e39aef83c0e1788f84f3d88de6057dcc401cfae57224147

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