Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1cdfafc99e7eb4…

MALICIOUS

PDF

38.3 KB Created: 2021-05-14 23:06:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ff48e70dccbbcfbb24d0ea1ddf2dca28 SHA-1: 518a0e1f08b84ef4a0c1353127d54c4032ac6134 SHA-256: ae1cdfafc99e7eb4cc497d2ed1f9e706d1db3fbc0580f0993048f923c40ad47c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and websites promising free game currency or cheats, such as 'coin master free spin codes'. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of a phishing or scam attempt designed to lead users to potentially harmful content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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-spin-codes-game-hack In PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-robux-ad_GM431946152.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
stream_003_off00004b46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B46 25556 bytes
SHA-256: a5b1cbb07e56060b7e5d4debdbe675c22c336095d19fab006e684c501132aa23
font_01_sfnt_off00008557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8557 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676

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