Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e6d167acd3796f…

MALICIOUS

PDF

32.9 KB Created: 2021-07-04 10:13:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5f4befb8a6e40fc40eeefd96a968ab0d SHA-1: 60995850a11393ef47244c2d8866329dbbb5ce9c SHA-256: 12e6d167acd3796f9d4edbafd654205e08dcbc5b9e351c4568b1556cba59a878
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this by advertising free game currency and hacks. While no scripts were extracted, the presence of malicious redirect links suggests an attempt to lead users to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/earnrobux-game-hack In PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-robux_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-get-2021202120219-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/hacking-websites-for-robux_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/buy-free-hacks-now-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/robux-today_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/roblox-free-places_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/roblox-skirt-free-to-take_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/dominus-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/roblox-dll-injector-hack_GM431946152.pdfIn PDF document text
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-things-in-roblox-2021_GM431946152.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_off00002bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEC 22256 bytes
SHA-256: c1b762caf96ded6a33e535229cb07d1bc776fe465f5cf0b9d2aecdbc419335fd
font_01_sfnt_off00005d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D30 18552 bytes
SHA-256: 6794fc7ee49cdd0a33f98bbbc8a763353555002210e507bd98e2a39f67d6f290

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