Malicious PDF — malware analysis report

Static analysis result for SHA-256 397419875107a946…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 13:15:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 34e92839292ea6472b1dc524c12a8e28 SHA-1: 134070377cacab13c4f6d4644aed97003532b255 SHA-256: 397419875107a9462f222ceb8793474437e50a317fab6b63bd3b64d92503bdcc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lure users with promises of free game currency or hacks, specifically mentioning 'Robux' and 'Roblox'. The primary malicious URL identified is http://netcdn.tw/app/431946152/robux-com-free-robux-game-hack, which likely leads to a phishing or malware download page. The document's structure and content suggest it is part of a social engineering campaign to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/robux-com-free-robux-game-hack PDF link annotation
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/roblox-checkmein-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/pokemon-go-free-online_GM1094591345.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/how-to-use-cheat-engine-on-roblox-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/rhs-money-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/pokemon-go-free-remote-raid-pass-january-2021_GM1094591345.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/best-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/pokemon-go-free-coins-promo-code_GM1094591345.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/roblox-generator-no-human-verification_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F15 23112 bytes
SHA-256: d93c5d741eccae5b39665ce2a716228ae419373facfa92ac58fbe4509504e717
font_01_sfnt_off00006347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6347 18976 bytes
SHA-256: 27896acad5ca474033774e3721745fbaf6546dbb33b60a4a93bb974a81ff43ff

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