Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aaa3186669b7893…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 21:37:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c83776ebed0ece901f842cc4faf68611 SHA-1: be949ce9b25e2fa1bad611627b88133fca021f3e SHA-256: 2aaa3186669b789380a9e2ace8057f0b6107b81aeb0f385b652b76e42083b08a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that point to known malicious redirector infrastructure, specifically targeting users with lures related to game hacks and free generators. The document body, though partially corrupted, contains references to these lures and the malicious URL. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-games-coin-master-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/pokemon-go-free-balls_GM1094591345.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-cards-free_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
stream_004_off00005029.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5029 24252 bytes
SHA-256: ed5999f340f7302991da848d4e4c44fd520f540595a5db41eff73b69a088c8ba
font_01_sfnt_off0000879e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879E 17968 bytes
SHA-256: 5fada2ff63ba62223632bc56e8dfb1643a49e6b45897fd934634a5dc4cc15e02

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