Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3df0513b83fff42…

MALICIOUS

PDF

45.0 KB Created: 2021-05-13 00:20:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4982f2f2091b37599559f64b34d7d34f SHA-1: 7eeecd65574e14a640375b6c0a2e5c0787ec4b30 SHA-256: e3df0513b83fff42ebe783f89602650a98936004edb84a95a2f616c8f6f33aa7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks or free currency generators. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to direct users to potentially harmful websites, likely for further exploitation or phishing. The document body itself is heavily corrupted, but the presence of the URL and the heuristic firings are sufficient for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/coin-master-free-coins--game-hack In PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/ww-robux_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-spins-coin-master-blogspot_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_off00004a92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A92 25292 bytes
SHA-256: e6f02b5fec8f2b4f91ea1696b8dadb1ab2772bf837503835eb6c9beb16b144ee
font_01_sfnt_off0000825d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825D 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE3 17712 bytes
SHA-256: 0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e

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