Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fec8af4c1aced1d…

MALICIOUS

PDF

39.3 KB Created: 2021-05-21 15:16:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7f3d93ca63434f41b4aac8867022bf15 SHA-1: 47d4ee777dbed5b2e15de82e54353975e7a61130 SHA-256: 7fec8af4c1aced1dd3bd5ab5a998d24866883909089daab08969fd082f3d5336
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links, including one identified as a malicious redirector, which promises a 'free generator / game hack' for TikTok followers. This lure is designed to trick users into clicking through to potentially harmful websites. The presence of embedded URLs and the ML classifier's flagging strongly indicate malicious intent, likely to lead the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/835599320/get-free-followers-on-tiktok-game-hack In PDF document text
    • https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn-saber.com/__statics/gudangsoal/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn-saber.com/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn-saber.com/__statics/gudangsoal/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003538.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3538 25152 bytes
SHA-256: 0686a54cf6a819b0645771d1d1a35f96ee42f762f2bc8b7a6e05fbab530f352d
font_01_sfnt_off00006eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBA 3244 bytes
SHA-256: a640b4435a3a1441add55931bf654883824307683325fda534d12538443e5429
font_02_sfnt_off000079dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DC 17692 bytes
SHA-256: 927e39851add4dfd479e94c7f363911e27b11f2d7b93d82bb30fff9f618b2f9d

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