Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a5822c8f9488ba…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 20:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 97c9b2e2cb2b4eb8d76489b1a0d0cc34 SHA-1: b61a34e2934782598103e6ab6990d3f70b88def4 SHA-256: 72a5822c8f9488baaa5bb528a516336816d276b24c3f3a2c87857b0fe01b219f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/boku-no-roblox-hack-game-hack. The document body and embedded artifacts suggest a social engineering attempt to trick users into visiting these sites, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/boku-no-roblox-hack-game-hack In PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d68.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D68 25604 bytes
SHA-256: d39d2d98abb57ddf69d5466d208772fe4921032717b54a333c8ee05dfead3f80
font_01_sfnt_off00008804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8804 18320 bytes
SHA-256: cd83af5ba5492d0d90d9a213d6c06333e9cd9f39d2b07ffbf91c7f3a8ed3d34e

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