Malicious PDF — malware analysis report

Static analysis result for SHA-256 823be1baa72068e5…

MALICIOUS

PDF

33.6 KB Created: 2021-07-03 13:59:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ea1183f4b1eaa3804c2d1764f8100c44 SHA-1: 73562ea4739ea093b155128928a4595f2eecb965 SHA-256: 823be1baa72068e579df221803d62cdd68734588566d6be226b6f54ac60a4d12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free generator / game hack' lures. The document body and embedded URLs reinforce this theme, aiming to trick users into visiting the malicious site. While no scripts were extracted, the PDF structure and embedded links strongly indicate a phishing or scam 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/479516143/minecraft-free-games-no-download-game-hack In PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/roblox-and-hacking_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-to-get-something-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/get-robux-free-generator_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-do-you-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/dailyrobux_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/roblox-pokemon-free-play_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/guest-pants-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-to-send-free-spins-on-coin-master_GM406889139.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_off000031eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EB 20864 bytes
SHA-256: 41a931876d2c5eef8a9bcaf459f2efb5458fe2b278f061155af2c33ca6e522e8
font_01_sfnt_off00005ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED9 18840 bytes
SHA-256: f422f5a404d69563e9848364457805cf09bb367a1ef3b435fab4dae7c96e7f32

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