Malicious PDF — malware analysis report

Static analysis result for SHA-256 232ed83c620fb826…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 08:20:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ca81f2b8f43d4351906122c71aad6243 SHA-1: 48dc2925f9c2cbe44a983531db3f4a0e4b65b80b SHA-256: 232ed83c620fb826378f6927cd2d6e33cfeaa56957dc7a96f4716081810618ac
240 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure to trick users into clicking a link, impersonating Apple and promising game hacks. The link leads to a known malicious redirector infrastructure. The document also contains instructions that suggest copying and pasting content into a shell, indicating an attempt to execute commands or further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/479516143/minecraft-classic-free-game-hack.
  • 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.online/app/479516143/minecraft-classic-free-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-stop-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/pokemon-go-free-egg-incubator_GM1094591345.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-robux_GM431946152.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
font_00_sfnt_off00005105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5105 24484 bytes
SHA-256: e15078d063fa6e9594d6e4bf5134201a174d538e6b88375e62eb1d0cd24f9ffe
font_01_sfnt_off000087f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F1 17644 bytes
SHA-256: 1ee95ff2a7de50dda93d1224861f64f53bfa9b684d20bd49bdd14d4804095e27

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