Malicious PDF — malware analysis report

Static analysis result for SHA-256 44885571ce33c342…

MALICIOUS

PDF

45.5 KB Created: 2021-05-14 11:06:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2ba323941c69f865717692d982ecf2f7 SHA-1: 5505763c586e2db3d99d15be4039791a4a6f1a9f SHA-256: 44885571ce33c34213a21bb9653a813c2266348e2fdb12a225c0bf601eaaac7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators' to entice users. The primary lure URL is 'https://netcdn.xyz/app/431946152/roblox-hack-app-game-hack', which is associated with a critical heuristic firing for malicious redirector links. The document body, though heavily obfuscated, contains references to these lures and other URLs hosted on 'icefuture.ru'.

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/431946152/roblox-hack-app-game-hack In PDF document text
    • https://icefuture.ru/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/hack-client_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000456f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x456F 26772 bytes
SHA-256: 42171cc5618366b0328f0b3cbdbfcdc7a4c360348ee7fae8c02fe57ab92c6489
font_01_sfnt_off000083aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED4 18356 bytes
SHA-256: 7cdc4109e76722f5b523df4cd1b295e2212ddbe91aca110ba626f8c95e058f26

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