Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a061fa5ec9a3e24…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 16:50:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b874478e4351d2c6674a3cb86b2dab8a SHA-1: 096bce65ca7fda8d2ecb42d496f54e62f4695183 SHA-256: 1a061fa5ec9a3e248ed79541e064d2f0181cac7edda3f333e5f3e268ec488ad8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, such as 'free-robux-only-1-step-game-hack'. The document body and embedded URLs strongly suggest a social engineering tactic to lure users to potentially malicious websites. No scripts were extracted, but the presence of malicious links indicates an attempt to redirect users to a compromised or malicious site, likely for further exploitation or credential harvesting.

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/free-robux-only-1-step-game-hack In PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/roblox-hacker-beta-download_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/comment-avoir-des-robux-sans-hack_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-robux-generator-2021-nov_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/discord-free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/inject-hack-com-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/hackcom-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/roblox-cool-outfits-free_GM431946152.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/change-you-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/show-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/before-the-dawn-roblox-free-play-online_GM431946152.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-pc_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA3 22148 bytes
SHA-256: 14cb49cac01beda6db2be18dbd60e2c4d68e79d7f96086ad0609912766089368
font_01_sfnt_off00005e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8E 19356 bytes
SHA-256: 6203e8b6a616a7180bc9441a8d043da3f01388f0f459c4fdfb5ce8965eca2553

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