Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2a77d668e1c7ad…

MALICIOUS

PDF

43.6 KB Created: 2021-05-12 07:01:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 281c240b159cb5211f5369f83e54d141 SHA-1: aa6d1383f5af05c34880b1d9ffd4cc5a5a8538b5 SHA-256: 3a2a77d668e1c7ad37b72bdb34a57c67b98cd91467baffd1943af4961d9e46c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and free in-game currency. The heuristic firings indicate a deliberate attempt to lure users to potentially harmful sites. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/406889139/coin-master-hack-download-2021-game-hack In PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/robux-game_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/how-to-duplicate-coin-master-spin-hack_GM406889139.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_off00004d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3A 25264 bytes
SHA-256: 0979d23b24af134cb5c1a2a9d0da4c5177164da6ad8433ceb87a84dea7f74b6a
font_01_sfnt_off000086a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A1 18696 bytes
SHA-256: 8be69e5611b2f1b9a2f3a77307bfff4bdbd54e1b1e6fe005490b405b0e560c9f

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