Malicious PDF — malware analysis report

Static analysis result for SHA-256 22788a0034ee3964…

MALICIOUS

PDF

56.6 KB Created: 2021-05-17 10:39:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d854f6516a998131c8fbb40612758bcf SHA-1: 40dfbe80e2fb7b96b68556750616eb2fe9827710 SHA-256: 22788a0034ee39642cabc01c90905ef55f23899b4fc4d361ea36c07a6790a764
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a "game hack" generator, which is a common lure for phishing or malware distribution. The ML classifier also flagged the PDF as malicious. The embedded URLs suggest a redirection to potentially harmful content, likely aimed at tricking users into downloading further malware or divulging information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8167

Heuristics 4

  • 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.xyz/app/406889139/how-to-get-free-coins-on-flip-master-game-hack PDF link annotation
    • http://schoolsupportandbeyond.org/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D29 28080 bytes
SHA-256: 373b33c5cbdf21a0cf8b8b2f789d198890996cbb9920e36592465df104660c7b
font_01_sfnt_off00008eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECA 3136 bytes
SHA-256: 541070a1bae688ea88296f5c8f4ecaf3f2cd4c6c10fb0d6760bfb5f7e5907efe
font_02_sfnt_off000099c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C6 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000aceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACEB 18124 bytes
SHA-256: f732bea565dca091e78787654c5995a58c911ad6d414585fdaaa80a3527f7235
font_04_sfnt_off0000ce55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE55 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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