Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8efe874c18c214…

MALICIOUS

PDF

45.1 KB Created: 2021-05-19 16:50:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 79ef8e4f4c4a9629706b94a112989205 SHA-1: d935913d7e85efc586d1f57075eefd5d28ad1f3d SHA-256: ae8efe874c18c2143a900728d38df1c85dbadff856a6928af80d67fb2aa51112
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The document body, though partially garbled, contains references to these lures and embedded URLs. The presence of these malicious links and the ML classifier's high confidence score indicate a high likelihood of this document being used for phishing or scamming purposes, likely as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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.xyz/app/406889139/free-spin-and-coin-links-game-hack In PDF document text
    • http://subarulegacy.com/images/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://subarulegacy.com/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://subarulegacy.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA4 25440 bytes
SHA-256: 68a236da4593e3bfaeccbb30dfa3bac8aed0a2484f8b4ddb4546ecb1cdfef254
font_01_sfnt_off00008570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8570 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F22 17896 bytes
SHA-256: 9e473fa370b66a6494b15977b9d2a3ea7c01ddc9c3166ab955b90e57f7a3e83c

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