Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2f007e44dd9bbf…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 06:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 318855aa450364c345b8b873dc7752d5 SHA-1: f54e9215783797ac18b2ba901660e21a780bf00f SHA-256: 3f2f007e44dd9bbfb27aca62375fdfafb83562cbbf994cefe9b43f7ac1703540
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and cheats. The document body, though heavily obfuscated, contains a URL pointing to a malicious domain, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-spins-apk-game-hack In PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-the-creater-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-hack-client_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_004_off00004cec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CEC 26024 bytes
SHA-256: 24baab82183c9ac994f154fe61ddcb4fdeb9956d3cd5bfa57c3bb8187243b01c
font_01_sfnt_off000087ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87FF 17892 bytes
SHA-256: 116ba2d485dba3cc3c3f0b67c538e954af0badc3125826b285df3e1af5dac94f

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