Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aaba4a1df5f1769…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 17:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b46de4c29ab0704be0fc9f64286cceb1 SHA-1: 85dd41adfe7b94c49ce6218c3b268108b6266a26 SHA-256: 8aaba4a1df5f176985e6bed8b38df519b34ee3f924c1b068060bf6bf63d35384
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and free generators for popular games like Coin Master and Roblox. The primary lure URL is http://netcdn.tw/app/406889139/coinmasterfreespinlink-game-hack, which is identified as a malicious redirector. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at tricking users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coinmasterfreespinlink-game-hack In PDF document text
    • http://bw.ac.th/userfiles/files/roblox-rs-hack-2021_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/roblox-hack-tool-download-2021-pc_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/mobi-hack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/wie-kann-ich-robux-hacken-website-liste_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/roblox-hacker-shirt-template_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/i-hacked-it-roblox-piano_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/roblox-dinosaur-simulator-hack_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/haktuts-coin-master-free-spin-link_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_off00002ea0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EA0 22692 bytes
SHA-256: f270eea290019118100c2eda731f4b7aa6b89d036125b51bff68beec4b42ffd7
font_01_sfnt_off00006131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 18516 bytes
SHA-256: a000f6d0810836f211bd69ad4954bd13017d955b6cad91c28efc413f8e97b1ec

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