Malicious PDF — malware analysis report

Static analysis result for SHA-256 3970dcc12fd599bc…

MALICIOUS

PDF

42.0 KB Created: 2021-05-23 02:37:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4413565ec71712dd6d2f7b8eb8e31a13 SHA-1: 6268af83cc1f273dc2e31f1b6d2849c73220d9c4 SHA-256: 3970dcc12fd599bc0a3f902da05c7fdc4b3222a2567bdb6b3e1fb1ee26476c14
160 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, specifically identified as malicious. The document body and heuristics indicate a lure for "free generators" or "game hacks" to entice users to click on these links. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or redirect users to malicious sites, aligning with common phishing and malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8161

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/tiktok-fans-free-game-hack In PDF document text
    • https://lobergetart.se/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://lobergetart.se/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://lobergetart.se/images/free-robux-place_GM431946152.pdfIn PDF document text
    • https://lobergetart.se/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://lobergetart.se/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003038.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3038 28456 bytes
SHA-256: 45d6f43587a52dd7fc7b64dd8cbd678d0930400a94b22cce4b7cc2a7f89f5704
font_01_sfnt_off00006d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D82 3432 bytes
SHA-256: 1ddb9d31cef3323f9696250169f2b8a13528fe9769befaaaef91402d26dd8b2c
font_02_sfnt_off00007938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7938 3120 bytes
SHA-256: 49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
font_03_sfnt_off0000844c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844C 17684 bytes
SHA-256: 22325babc2251f8239949cad6d45cc43a88f66264b3c8ea65c603fce63084c3f

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