Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7cd5e1142b2e396…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 10:35:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6cb5fdd50a80ac0a0dc8ef25493fd691 SHA-1: ac38f39334e72bc4a733ed9d7e27b8552e07e230 SHA-256: d7cd5e1142b2e39696af93b40f6d24515808217dcf2dbf832cb250938b2ad501
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/how-to-hack-coin-master-game-2021-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/master-coin-free-link_GM406889139.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/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/easy-roblox-today_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
stream_004_off00005150.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5150 25708 bytes
SHA-256: d01f8a353059bc17bc8dfffeec5932f066385e2cb8c180131fbe0b99104dbab1
font_01_sfnt_off000089d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D9 18540 bytes
SHA-256: 0dd6564037b1693bc387ec554476f6901470b6523a56a44e31cb3c159dc675b0

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