Malicious PDF — malware analysis report

Static analysis result for SHA-256 42282df6f156efbe…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 14:30:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9926eed7b893bac7a497d29496c9cefa SHA-1: 3ef7e4a7cccff7718004a02b3d34f46417121905 SHA-256: 42282df6f156efbef4b6fc986fac99e62d3c866b3d48672c9754ab2d33795467
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to entice users. It contains multiple embedded URLs, including one pointing to known malicious redirector infrastructure. The document's structure and embedded links suggest it is designed to lead users to potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/free-roblox-accounts-with-robux-2021-game-hack In PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/freerubux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/can-give-free-stuff-away-in-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-coins-and-spins-link-for-coin-master_GM406889139.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_004_off000052cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52CC 27276 bytes
SHA-256: 1ef09ceae64524efa8856dea0845565f6bb172b4ce8dc1c3fe232c3623e34ccd
font_01_sfnt_off00008f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F79 19076 bytes
SHA-256: c054b0c192e62aa8d18573c4a3caef3c11adbf34d317da17e190ba3718f8ceb0

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