Malicious PDF — malware analysis report

Static analysis result for SHA-256 13c8abb9a992c200…

MALICIOUS

PDF

33.8 KB Created: 2021-07-07 15:08:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 88671cf116c9be44be8f2fafcabff673 SHA-1: 1b77e264e6b3b9c9c75c3f7f14e805e45e4b2ad4 SHA-256: 13c8abb9a992c200642fc4959b494b33ba238b55b1c75deca296658662d3c1e1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links and text referencing free coins, spins, and hacks for popular games like Coin Master and Roblox. The primary heuristic indicates that the PDF links to a 'free generator / game hack' redirector, suggesting a scam or phishing attempt. The embedded URLs likely lead to malicious sites designed to trick users into downloading further malware or providing personal information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-free-coins-and-spins-link-today-game-hack PDF link annotation
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-do-you-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-codes-for-roblox-live-now_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-money_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-codes-2021-february_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/black-adidas-hoodie-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-coins-on-coin-master-generator_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_002_off00002d74.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D74 23012 bytes
SHA-256: 3008e0303a7301158c871c9e70cbb5f8ed5b05877efbb0d3ac6f9b3877cb2dcf
font_01_sfnt_off0000600d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600D 18696 bytes
SHA-256: 31669538ff40287ff7f58bdcd26457d43685aec4be0ef4186bcc350705393131

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