Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2815ba830dc3dd1…

MALICIOUS

PDF

33.9 KB Created: 2021-06-25 10:45:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 41c6002f7c21e221f3c8ebbf3d63d4d8 SHA-1: 5e1d74bb1f59685bd13a5d46d695d20aa08009bd SHA-256: f2815ba830dc3dd1395bc713907487fa8cb20e430f05a36ba4ce6057bf52dc6d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users into clicking on what appears to be a 'free generator / game hack'. The document body and embedded URLs suggest a phishing attempt related to game cheats or accounts. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a high likelihood of further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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.co/app/431946152/free-account-accounts-roblox-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-theres-no-way-of-getting-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/copychat-hack-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/pokemon-go-free-coin-promo-code_GM1094591345.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-limited-items-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-give-free-robux-on-roblo-youtube_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-jailbreak-cheats-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_off000031e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E2 22012 bytes
SHA-256: 69b072c89d731ff8848a17928924909aad24592a5e5357cbab5272e298d101ae
font_01_sfnt_off000062a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A9 18896 bytes
SHA-256: 2d87ff257b958a818695a04154d640c5cc59d959e90aa0f02950601f814c2e7e

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