Malicious PDF — malware analysis report

Static analysis result for SHA-256 933f58c15e9695f4…

MALICIOUS

PDF

38.0 KB Created: 2021-06-17 17:19:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dfdc21529d1eb030d25921df75fd83ce SHA-1: 8ba13ea07faded23d031836a5024c13b2c10c4c7 SHA-256: 933f58c15e9695f4d16b0fe82cfb5395b2d8b7ed6414e35eb9e563cc19044e3d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and domains associated with game hacks and free item generators. The heuristic firings indicate that the document is designed to lure users to these malicious sites, likely as part of a phishing or scam campaign. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/byfanaticz-co-free-robux-game-hack In PDF document text
    • http://reggieslockandkey.com/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/getrobux-now_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-hack-that-easy-and-o_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-eploite-for-free-download_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/firestone-training-map-free-model-leaked-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BF8 23100 bytes
SHA-256: 688cfe6f31bd7fa6d766d7710ca069189ce1af1fe4d83f9d91378ffe30b5ff7f
font_01_sfnt_off00006ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 19016 bytes
SHA-256: 7efa4d7f6b36eb793cbb4b734afcde57a9e1102677f0b98f9a3b5bda8f4cc53d

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