Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18480148f1429f3…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 07:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f97105df3b74adcfaa97e519f65f236c SHA-1: 6919edd154b4c8a7c2a5ccd5e895114746e869a3 SHA-256: f18480148f1429f3898500bc9a5dc6ade8bcc6a914ecc70b1f77284b98586cf9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, including one identified as malicious infrastructure. The document body and embedded links suggest a lure for free game currency or hacks, a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly indicate a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spin-codes-coin-master-game-hack In PDF document text
    • http://www.arichuna.com/images/files/free-robux-java_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/how-to-get-robux-on-roblox-for-free-on-pc_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/roblox-piano-keyboard-hacks_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/tiktok-free-followers-mod-apk_GM835599320.pdfIn PDF document text
    • http://www.arichuna.com/images/files/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-means_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-hack-game-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/how-to-get-free-hacks-on-robloxs_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-money-in-mad-city-in-roblox-with-codes_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/roblox-secret-free-items_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/roblox-hack-data-explorer-blox-no-hero-academia_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/gamefly-free-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/how-do-you-get-free-robux-without-pastibein-raw_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
font_00_sfnt_off00002fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 23176 bytes
SHA-256: b9ae8b257cd41e7d63db5bb850a5009218219bbaab24d40fe827bb71c1901ee7
font_01_sfnt_off00006377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6377 18348 bytes
SHA-256: 86b586e837011718de74748d867d06bb10271cb9221b6c71a2de347ebcf682d0

Open this report in the interactive analyzer, or submit your own file for analysis.