Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d82ab3cbf526d06…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 17:32:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c34d13e3ba8d194488cbfc214a43992 SHA-1: 2278814765df44edc0191ca9428267227f43208a SHA-256: 1d82ab3cbf526d067d510e7415db8db1a81667f4ac12517b812b3693d752e263
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that lure users with promises of free in-game currency for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests a download or redirection attempt. While no scripts were explicitly extracted, the PDF structure and embedded content indicate a phishing or scam attempt, likely leading to a malicious download.

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/how-to-get-free-robux-easy-2021-game-hack In PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-doge-outfit-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/robux-hack-generator-2021-no-download_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/deathrun-is-free-in-roblox-player_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/blonde-action-ponytail-roblox-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-roblox-accounts-v3rmillion_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-codes-that-work-2021_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9B 22248 bytes
SHA-256: d6a9f6a32d55393017c5776b555fd6552f2ec7de54dfce290345e0ae6b4c203c
font_01_sfnt_off0000602f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 19568 bytes
SHA-256: 6047aacc591c706ba05485d06cfe5ae263460dd3f24b02a1ffd0afe45eaea607

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