Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b6e8dbf58ff0c1…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 07:06:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: cb40402d3ce35ea05fe4c3b1e6ace57b SHA-1: 397138271e092c665a49e73740bb6ab5b985df4b SHA-256: 30b6e8dbf58ff0c13567de49781e74921ae52f79a166286079e70921d3ce172d
160 Risk Score

Malware Insights

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

The PDF contains multiple links designed to lure users into downloading potentially malicious files or visiting scam websites, disguised as game hacks or free currency generators. The primary redirector URL is identified as malicious infrastructure, indicating a phishing or scam campaign. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-free-spins-link-download-game-hack In PDF document text
    • https://www.fishboat.hr/files/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.fishboat.hr/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.fishboat.hr/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/hack-robux_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off00004a57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A57 24580 bytes
SHA-256: 62edc4932156bfce0770e4a9f523b139c21ee1c242a279fdf5394ac91924dc22
font_01_sfnt_off0000817f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817F 18636 bytes
SHA-256: e0ee4d28e9fbd90893640acb023fdb3433a7d18e360fd79b0a1965f7934d0c46

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