Malicious PDF — malware analysis report

Static analysis result for SHA-256 3416c6be861f70f4…

MALICIOUS

PDF

40.6 KB Created: 2021-05-19 04:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ffae355f3a3b2b3cdf3aa7986dbfebb2 SHA-1: 8723edf277e2b7ba8037804354bc2b22b7bef6b0 SHA-256: 3416c6be861f70f432283bd08324fbc75c69a7746b8ab6e09e5d3a4594d33845
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free passes for popular games. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the embedded URLs and the nature of the lures suggest an attempt to drive users to download further malicious content or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/1094591345/pokemon-go-kanto-free-pass-game-hack In PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-free-master_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/impact-minecraft-hack_GM479516143.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_off00004867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4867 23396 bytes
SHA-256: b5ef3a691b41d07d177c43e96aa795b4e4b2f271fc6215809cfae183d1fe486b
font_01_sfnt_off00007cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 18176 bytes
SHA-256: 89033d06a2557f5bd60cfb93dac5cb94f6b75ba67df2e2e3ab7f8bbb5e5396f3

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