Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b2aa8913876947b…

MALICIOUS

PDF

43.0 KB Created: 2021-05-19 04:17:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 738c02aad130f347b1ecd8022b9f9551 SHA-1: 786b33da511666c541982f003bd68aa4b2641f73 SHA-256: 4b2aa8913876947bd6928676ead440bf36223b50679348e64c57f4bb3f184891
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body, though heavily obfuscated, contains references to 'Roblox Robux Generator Tool' and a URL matching the malicious redirector. This indicates a phishing or scam attempt designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/roblox-robux-generator-tool-game-hack In PDF document text
    • https://reggieslockandkey.com/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/jailbreak-script_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-coin-master-game-without-verification_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
stream_003_off000049df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DF 25632 bytes
SHA-256: 6c185e088b3a5d69b71bb1a8b83dc0542bb07fd9bc9f9c36d4bb03afe0c77982
font_01_sfnt_off000085d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D8 18256 bytes
SHA-256: d3f4191cb905e11e15b1a275d00a7cd931df57561d027c5bc59f2434de0157e6

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