Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbba4be0574acc5…

MALICIOUS

PDF

34.8 KB Created: 2021-06-23 05:38:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 29de3e7e815be6c23597710f8e1ace6b SHA-1: d81cf0f13887f8216fef434181c6a92b70c291eb SHA-256: 3bbba4be0574acc54a691f4db6006b813c9701b5b06beff855f65cc651d01631
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9980

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.co/app/431946152/how-use-pabestin-codes-hack-roblox-dungeon-quest-game-hack PDF link annotation
    • https://allpromise.com.tw/image/data/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/what-is-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/robux-boost_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/hack-dragon-ball-rage-roblox-2021_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/master-coin-free_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/javascript-free-robux_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
font_00_sfnt_off00002f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F65 22092 bytes
SHA-256: 90a026c2696c7796822f7a9365c0ee640e34be52ced6a51351e658c95963f083
font_01_sfnt_off00006083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6083 19840 bytes
SHA-256: bb971f0b0f84e755e0ee8f3da92e1badf8b78415655a7045e626fadc1878f382

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