Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca4c0af67b216b6…

MALICIOUS

PDF

43.8 KB Created: 2021-05-17 12:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ae36b8c7c3bc94da0e86da477cc1c7b4 SHA-1: 9e60d639d4c8da1c9ba8bad3c0833ffd37a52fbb SHA-256: 2ca4c0af67b216b6c6bd495130f8f1fa1aa632f7c62314ea77a708707811d6e9
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 0.9648

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/406889139/corn-master-game-hack PDF link annotation
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/master-game_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D5 24840 bytes
SHA-256: 08061760c32fc3b7bdcd35f89b53835b2c28fdc343419550ef791f99632538cc
font_01_sfnt_off00008143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8143 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2E 17428 bytes
SHA-256: bb7ddfb5eeb119ecc025e94c1b8f2696886702df12a5472958d742496d82a376

Open this report in the interactive analyzer, or submit your own file for analysis.