Malicious PDF — malware analysis report

Static analysis result for SHA-256 058fc871dfb2cc4e…

MALICIOUS

PDF

33.3 KB Created: 2021-07-09 18:22:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b945c0ffac098ac781a0597e0f176d53 SHA-1: 268fbb14080a3be5571816660df97433e0c673d2 SHA-256: 058fc871dfb2cc4e28d487c14f2a348ad4cc8d588988194860752a6eb70441a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a primary external URI pointing to a download site for game-related cheats. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for malware distribution. The presence of download lures and numerous links to potentially compromised or malicious content supports the assessment of a phishing or malware delivery attempt.

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/robux-app-game-hack In PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/100-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/robux-game_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/mobile-hack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-redeem-code-free-2021-september_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/pubg-600-uc-redeem-code_GM1330123889.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/hack-jeux-roblox_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/pubg-uc-and-bp-generator_GM1330123889.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-bloxburg-free-robux_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.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_off00002c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1A 22356 bytes
SHA-256: 5ddef91357bbb7218f97b8ad30d33e4351bc19c81989ca96ad52d59fb3762d40
font_01_sfnt_off00005df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF8 18728 bytes
SHA-256: a4f8bb4029945ab2f6fa9fe335fbc160dcccd1e13f3d919c4f5c698cd933eb16

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