Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9442c55b0631edd…

MALICIOUS

PDF

45.9 KB Created: 2021-05-20 02:50:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 13e5d23c0e6ebff7045c500dc40f81c3 SHA-1: aac14a22a1728efd29000eebb7c1750f678aa5d6 SHA-256: e9442c55b0631edd807f04274cfea1f319f6317c0ed86a312cf972f168e6a34e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links to a known malicious redirector disguised as a game hack generator. The document body and embedded URLs promote various game-related cheats and free items, aiming to lure users into clicking the malicious link. This behavior is consistent with a phishing or scam campaign designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/835599320/youtube-free-fire-tik-tok-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/is-pokemon-go-free-to-play_GM1094591345.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-hack-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B9 28616 bytes
SHA-256: 874dc7dbfa6d3395b6aab7b81b49a059c60771097791b6dc4014f3684bd4c625
font_01_sfnt_off0000875d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875D 3056 bytes
SHA-256: 405cbbc1279d17431d9c49c581f589768770a4a8115ad1c270973ceedfb0d91a
font_02_sfnt_off000091db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DB 17916 bytes
SHA-256: f144d900830c612c5703f401f7c3a1c5dec3aadf1cc42019de22cfcad2b50b2d

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