Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6eb746938d0fe45…

MALICIOUS

PDF

47.3 KB Created: 2021-05-17 10:39:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 836003dca3997cfc771bc837a0f764ec SHA-1: 5f8b3c233a63c36d98d584321855475fb5a80fe6 SHA-256: f6eb746938d0fe450bd0c4d89cd69933c7cd3aebda14ab9ae7561ae552ef3c5a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and generators, such as 'roblox-fly-hack-game-hack'. These links are flagged as malicious redirectors, indicating a phishing or malware distribution attempt. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/roblox-fly-hack-game-hack In PDF document text
    • http://www.bernardisrl.eu/images/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/robux-scam_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bernardisrl.eu/images/free-coins-for-coin-master_GM406889139.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_off00004854.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4854 28648 bytes
SHA-256: 8f0b034597088ec11ce8a7f62ebc3bc433c38abf729b726707cca9dbc8c99552
font_01_sfnt_off000088b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B8 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000095c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C9 18528 bytes
SHA-256: 48aa5298b09ebe1486756ea90f1095ff6b224374f32c9ff4b9ed1390be9ca915

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