Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aeb9fd1b6159277…

MALICIOUS

PDF

49.3 KB Created: 2021-06-11 02:39:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 29358456cfa59c87c8a8de62e174da1f SHA-1: 96595950c432827e344223de592d8a23641fb315 SHA-256: 7aeb9fd1b61592779697585e9922d4e6deea8453e2321ad94c86b41c530341ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users with promises of free game items or hacks. One prominent link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for further malicious actions, such as downloading additional payloads.

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.tw/app/431946152/how-to-get-free-items-in-the-roblox-catalog-game-hack In PDF document text
    • http://www.psychom.com/storage/editor/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/hacked-speed-city-roblox_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/business-cat-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://www.psychom.com/storage/editor/files/haktuts-2021-coin-master-free-spin-link_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_off0000561f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x561F 24672 bytes
SHA-256: da893985c63d3dcf6c1b049e4db3755e7442e1ac927762ef7af670285b72c1c4
font_01_sfnt_off00008e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9D 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B45 19156 bytes
SHA-256: 7c0fdd92c54fcdcf3f900d0fb8556b0b226f7ac598148d0d4e2197a1df29dda1

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