Malicious PDF — malware analysis report

Static analysis result for SHA-256 5636c7bfde350425…

MALICIOUS

PDF

45.2 KB Created: 2021-05-15 04:34:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd9d688f630a4b77ce1262447b0b6bc2 SHA-1: 5b037860543986ae2a6e8b11ae939d6a0046e619 SHA-256: 5636c7bfde35042581fe390081b2ca0fb1e1dea78a43a13eeb25fab60f151d72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free spins' lures. The document body and embedded URLs suggest a phishing attempt to trick users into visiting malicious sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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-free-spins-link-no-verification-code-game-hack In PDF document text
    • http://pia2000.net/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-gifts-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AE 27160 bytes
SHA-256: 0b77c24941fd4d7015d1bd80524ffdbd998c8a5b448f69b0423e318113b22662
font_01_sfnt_off000083dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DD 2944 bytes
SHA-256: fcfcd28869b8d6c7503d63ed8d48371ec5b580fea2733193e2acbb82b3d30a76
font_02_sfnt_off00008e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E08 18364 bytes
SHA-256: 32f8b4adb1641f00b1b9d0931c2fb14585cf1e121e0c59b47926bcef0ce50eef

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