Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0eab3d4ba38e0fe…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 04:51:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 008be6c8ed3de1f1b86a9daca07cda04 SHA-1: b618d2baea176ca5f14dd8e8c280995808d5d07f SHA-256: b0eab3d4ba38e0fe0694424b2e83e139f12481a6e117a0674597a7b825727550
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free items to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. The document's content and embedded URLs strongly indicate a social engineering tactic to compromise users, likely through a phishing or credential harvesting scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.tw/app/406889139/coin-master-hack-8-ball-pool-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/pokemon-go-free-remote-raid-pass-february-2021_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hack-forum_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/oprewards-com-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_off00003508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3508 22772 bytes
SHA-256: 89d1884b236fbed93014cc6552d58276541e9c7f7bc74d19146de591cf54bb0b
font_01_sfnt_off000067ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EC 18656 bytes
SHA-256: 9cc3a0a753a325654d75dca011d50bcc08942e96fa930538f944fba4de9b9fc3

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