Malicious PDF — malware analysis report

Static analysis result for SHA-256 85287813b33b260f…

MALICIOUS

PDF

35.1 KB Created: 2021-07-07 23:54:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 16d3fb709f56d51747ffce723a884729 SHA-1: 1d77773bc244af06983de7b5deabf75901bd46df SHA-256: 85287813b33b260f09121f30e1798796be6425a37b367d6993f8b86658d22a39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a critical heuristic firing for a game hack redirector lure, specifically pointing to a URL associated with malicious redirector infrastructure. The document body also contains the same URL, reinforcing the lure. This suggests the primary purpose is to trick users into visiting a malicious site, likely to download further malware or engage in other malicious activities.

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/406889139/coin-master-free-spins-2021-game-hack In PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/roblox-mechacubes-hack_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/coin-master-cards_GM406889139.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/roblox-booga-booga-hack-script_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/coin-free-spin_GM406889139.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/roblox-hack-client-pc_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://elearningmas.alhidayahwanti.sch.id/__statics/gudangsoal/files/robux-free-c_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_off000033ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AD 22388 bytes
SHA-256: 299980c6853df6ef4c13e537942758b52923331c990694e0a7229ef2bba86d92
font_01_sfnt_off0000658d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658D 18576 bytes
SHA-256: a126babb65047b6746617d7d7f27a00b485a4a24246b96e57b4b97a03add53e0

Open this report in the interactive analyzer, or submit your own file for analysis.