Malicious PDF — malware analysis report

Static analysis result for SHA-256 237a81c9b9423470…

MALICIOUS

PDF

46.0 KB Created: 2021-05-12 21:31:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d3fe13380637e326a3d0779f6a18c497 SHA-1: 586e9f1116773d1c0e3e133212fa2ba7c18302fc SHA-256: 237a81c9b942347063940c588604c23b5c16bb14ce4b016c98aaf111e730d613
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 0.9432

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.xyz/app/479516143/minecraft-for-free-apk-game-hack PDF link annotation
    • http://www.lacarla.dk/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-pe_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4964 28548 bytes
SHA-256: 322e4a15171d73f5b15fc7dc51dbff9571dc9880fad4708bd95e064b56ae568c
font_01_sfnt_off0000885d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885D 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off000091fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FC 18056 bytes
SHA-256: d47e60dea5201fd8468efb81a59f0775697a9902aff7ce548d06165675d44cc7

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