Malicious PDF — malware analysis report

Static analysis result for SHA-256 6738933416a61865…

MALICIOUS

PDF

49.6 KB Created: 2021-06-07 03:48:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b3d07a6a80127bb734508e999d0812e0 SHA-1: fb86c2b0c3ed95ff54f85a9e4ce8425fff164787 SHA-256: 6738933416a618652a62a49109c13e5344c4358aab0a1ad310b523f8fcfded8b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as game hacks and generators, which is a common lure for phishing or malware distribution. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a second-stage download.

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/roblox-mad-paintball-2-cheats-game-hack In PDF document text
    • http://www.remiauclair.fr/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://www.remiauclair.fr/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://www.remiauclair.fr/images/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.remiauclair.fr/images/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://www.remiauclair.fr/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://krnl.rocksIn 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_off0000513d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513D 26700 bytes
SHA-256: 9c5231ea31dc0d8018933cffbabddeaa8ac49abb1cab484c92fbdd68614dce9d
font_01_sfnt_off00008fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE7 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF9 19052 bytes
SHA-256: c4aa632bba04d02c393cf58a199718a653d24781cad7a40edef3c1d036114c3a

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