Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a5ddf48d0a8f644…

MALICIOUS

PDF

48.3 KB Created: 2021-05-12 08:31:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d5c891476b84eb218477329e1b3ee496 SHA-1: c4084c5494f07c99c19c36222242598838ac2461 SHA-256: 5a5ddf48d0a8f64473f7a56c1e10ca71745f553c98281f04577b4b01bad35159
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a high-confidence heuristic indicating it's a game hack lure, directing users to a suspicious URL. The document body and extracted URLs reinforce this, suggesting a social engineering tactic to trick users into visiting a potentially malicious site. The primary IOC is the redirect URL which likely leads to a further payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/how-to-get-free-robux-without-doing-anything-2021-game-hack PDF link annotation
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/village-4-coin-master_GM406889139.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_off0000506c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x506C 25584 bytes
SHA-256: c6ea9975aea56449d0b84e7d17ffef6a0519d51a2f4b4974f0ce5f4f845ac0b3
font_01_sfnt_off00008bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF9 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000095ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95AB 19804 bytes
SHA-256: 7de61e10f8b36a8651a25a8843179e8b1ecc4bebcf46d2f81f98618caa29dc1a

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