Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14aa62d85ba023e…

MALICIOUS

PDF

44.8 KB Created: 2021-06-07 04:02:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 707eb6d8cc4736ab9a838f8dfc21bec8 SHA-1: 1d014d573e3c98285ccdf6250fe436c8f730537a SHA-256: c14aa62d85ba023ea4a860c4eaf56b2d86639c30765143b2455ca12023fd2313
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically disguised as 'free generator / game hack' lures. The document body, though heavily obfuscated, 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 content.

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.tw/app/431946152/clothing-groups-for-free-roblox-game-hack In PDF document text
    • http://www.e-lysis.com/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-rape_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/pokemon-go-free-gift_GM1094591345.pdfIn PDF document text
    • http://www.e-lysis.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-ruux-robux-for-free-grantz_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000504f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x504F 25060 bytes
SHA-256: 1f25e7aa195ebee0b89afe25c59bee86dbe9aafd2f9797dc603d08d887382c25
font_01_sfnt_off00008a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8A 18940 bytes
SHA-256: 104ce063edcde575bd77c71066001d5b363cee6852c982d78b8b08d9ecad3af9

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