Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c282cc6f08c7533…

MALICIOUS

PDF

33.1 KB Created: 2021-07-03 15:33:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 110793455210a8aaa9a8a94313ce4893 SHA-1: 7e9047768faebe58e00dc5a01325e301d4409c48 SHA-256: 7c282cc6f08c7533a71a97dc8bb06613ef1e982a336d963509441b6d7f0459bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with a primary link identified as a malicious redirector. This redirector is associated with lures for game hacks and generators, specifically mentioning 'Roblox Account Hacker Tool'. The presence of these lures and the malicious redirector strongly suggests a phishing or scam attempt designed to trick users into visiting potentially harmful websites. No scripts were extracted from this sample, limiting the analysis to the document's embedded links and content.

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-account-hacker-tool-game-hack In PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/december-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hacker-roblox-id_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-free-robux-hack-no-survey-no-download-2021_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_off00002d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D84 21492 bytes
SHA-256: ad8f61529209724d56801c9c05267bd667a750e38f76daed3447fb0a97571029
font_01_sfnt_off00005c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C89 18900 bytes
SHA-256: 5e227fc62697cb3269bdd3a592c8ebb7199d78e91586905988432c1fb38acbe4

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