Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc9a18038301309…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 04:28:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3d9a645b30ada911b133edd194821c81 SHA-1: 1e004a4afc3c2942765df93bf4101d18ca21dd43 SHA-256: ddc9a180383013090820dd3caa47e85480105a14f92c95e6a37c29627e21b05b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts numerous other lures related to popular games. The document's content and embedded links strongly suggest a phishing or scamming attempt, likely intended to lead users to credential harvesting sites or further malware downloads.

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/431946152/roblox-hacked-com-2021-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-vip-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-face-codes_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-games-that-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hacks-for-mad-city_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/soporte-para-reportar-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/a-discord-server-that-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-username-and-password-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-giveaway-obby_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_off00003100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3100 22188 bytes
SHA-256: c046ab7ce564caf4586180bc317917055aac6c7a0adc0cf4921fa283a5d45796
font_01_sfnt_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 19492 bytes
SHA-256: cf99458c484a21e360b103d4209b1f856885622cc7b7207d564808b2b934fcb7

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