Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b96355e6278203a…

MALICIOUS

PDF

51.5 KB Created: 2021-06-09 05:25:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 57a0e0d5ae9d543516c8f57d03daa0ee SHA-1: cf56f890959747b3817614527bab94bce21aeeda SHA-256: 6b96355e6278203a8b20d89e5555047081f4fc22f081c4440e66c6507820bed7
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF documents related to game hacks and generators. The primary link leads to a page discussing 'cheat engine for roblox'. This suggests a link farm or redirection scheme designed to attract users interested in game exploits, likely as a lure for phishing or malware distribution. No scripts were extracted, but the PDF structure and linked content indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9685

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/what-is-cheat-engine-for-roblox-game-hack PDF link annotation
    • http://nalmpantistractors.gr/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/why-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/lua-script-pour-hack-roblox_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/roblox-apocalypse-rising-hack-2021_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/static-moonactive-net-rewards_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FAD 25480 bytes
SHA-256: 5b2c8d55e90ef683fc59ab011429eaf6f397032516bb6e38a61790544e9ec892
font_01_sfnt_off00008a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A33 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000096d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96D6 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a3e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3E8 19052 bytes
SHA-256: 9713b47661a20bbc948fc16e75412c4827d32f3fe54548629d449370ff660da2

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