Malicious PDF — malware analysis report

Static analysis result for SHA-256 8066cc2275a5c1cd…

MALICIOUS

PDF

33.3 KB Created: 2021-06-19 04:38:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d2306dce4cc76ed63f79fb00290ef8de SHA-1: 5b8dbc920fec3f1ac029c1077376e850abf0249e SHA-256: 8066cc2275a5c1cd85f2c4b7d55dd12ba0dad0605df8ed38c3dffed5e7bc317f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to sites offering game hacks and generators, indicating a lure for users interested in such topics. The heuristic firings confirm these links point to malicious redirectors and a known malicious ML classifier output. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs strongly suggest an intent to redirect users to malicious sites, 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.co/app/431946152/www-robux-hack-game-hack In PDF document text
    • http://reggieslockandkey.com/images/roblox-phanthom-forces-credits-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/moon-active-games_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-star-wars-roleplay-space-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-generator-no-survey-or-downloads_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-decal_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/get-robux-for-free-generator_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-pokemon-go-accounts-level-30-2021_GM1094591345.pdfIn PDF document text
    • https://reggieslockandkey.com/images/game-online-roblox-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-rewards-free-spins_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3F 21556 bytes
SHA-256: bf2bb3eaaf4ae11aa5c9b116b7057f05eaac2c25c8ad8ebbfca3b7da4f339ac2
font_01_sfnt_off00005d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3E 18896 bytes
SHA-256: 2e1d0179dcd77116675348bb1a024095bdae28fc91c20ef1a61d818a59441f26

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