Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7657af0c0b48a87…

MALICIOUS

PDF

49.2 KB Created: 2021-06-02 19:12:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5b08407d0096ffc7a8ae4228d8d50783 SHA-1: 6866c9b758af6775fb578f11d77fac56fa05114c SHA-256: d7657af0c0b48a87ed65579a20a835dd2de5b623e79b2616c494b080f91c643d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and text that promote 'free generators' and 'game hacks', specifically mentioning Roblox. The primary malicious link directs users to a known malicious redirector infrastructure. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/431946152/roblox-vehicle-simulator-hack-client-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.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_004_off000052e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E6 25856 bytes
SHA-256: 930e6bf87d61bc7b25010001850683b9d41fd9531a8248c956ed64c744cb80f4
font_01_sfnt_off00008eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB4 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B5C 19108 bytes
SHA-256: 44e36efbec8a676c52a128ab41dfdd9f1486937ebf0860250b2c61187d455048

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