Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e5b63a539593bd…

MALICIOUS

PDF

45.4 KB Created: 2021-05-12 11:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 844860d23492111e3e4c8fcf91aa08e1 SHA-1: 74a75dfc0a24c5780a325c2b2567883024276d33 SHA-256: 06e5b63a539593bd3ad121f13e3946c09bd25e95e533930b4600033f33f56404
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and in-game currency, specifically targeting Coin Master and Roblox. It contains multiple links to malicious redirectors and further malicious PDF files hosted on `hilro.co.za` and `netcdn.xyz`. The ML classifier also flagged this document as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/coin-master-hack-ios-10-game-hack In PDF document text
    • http://hilro.co.za/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/is-it-possible-to-get-free-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_off00004b19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B19 25208 bytes
SHA-256: bf7619c5c8ad2a8919482f0edfd94a6c466c92a7780d67c60cd116dc6cb2f995
font_01_sfnt_off00008559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8559 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off00008f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F84 17996 bytes
SHA-256: 58ade539adf3b952ce76e8d334eb1b4796e6809d7279a56372c35fb3cdc2955e

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