Malicious PDF — malware analysis report

Static analysis result for SHA-256 2224598e928d1992…

MALICIOUS

PDF

45.7 KB Created: 2021-05-14 03:31:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 38e0eae7c183afbb7d6767d6cec66298 SHA-1: 78135e75d06011ee71c58afbd3c981459342dc79 SHA-256: 2224598e928d1992e09f92a81d628080386a8a924fae5e62471952d057dd7e48
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically targeting users interested in game hacks and free currency. The primary lure is the promise of 'free Robux', directing users to a URL that is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/ways-to-get-free-robux-game-hack In PDF document text
    • http://smpn1sda.sch.id/slims/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-download_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
stream_003_off00004bf8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF8 29528 bytes
SHA-256: 9674f62cfaa30cbc167ccfb631dcd622744fa901e59ddef778d7beb09954ecd2
font_01_sfnt_off00008eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEC 18724 bytes
SHA-256: b2cd5ec598a8c260812e966e9710fb38f03066217a6d0ec8f431d8a9dca8af42

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