Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8ba749c714594d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 16:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6cbc87539a11fb6f7f880c8119ece70e SHA-1: e85891e6342acfcb3a1291265b93e1987a4c1434 SHA-256: ed8ba749c714594dce71b0b815a8c698a274defc214417d9c1ef96c4381a97a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a common lure of free in-game currency and hacks to entice users. It contains multiple embedded URLs, including a critical redirector link to 'netcdn.co', which is known to host malicious content. The document body and heuristics indicate a phishing or scam attempt designed to lead users to potentially harmful sites or downloads.

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/how-to-get-free-cars-in-roblox-ultimate-driving-game-hack In PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-hack-inspect-element_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-free-download-mobile_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_off00002f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6A 22296 bytes
SHA-256: f24c0e15a85dd9209feac56f71b449bdbdc1cd5beee64aab78b3d58ecb07cc4a
font_01_sfnt_off00006123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6123 19580 bytes
SHA-256: 6e31dd20e6f247f65cfedd89b02a08238cf007e16e03fc4ae3e7d18616b0275e

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