Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2af976359227230…

MALICIOUS

PDF

32.7 KB Created: 2021-07-19 08:36:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 33f4ac123188098bdf58debba676084e SHA-1: d341056dff0ad9a35e7c044a4616e7b2213c6823 SHA-256: d2af976359227230a621a6bb7fd31229451babfb8d83d7ec0cd143401cf0cfc7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically pointing to a 'free generator / game hack' lure. The embedded link `http://netcdn.tw/app/835599320/how-to-get-tiktok-famous-free-game-hack` is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and link analysis strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5689

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/835599320/how-to-get-tiktok-famous-free-game-hack In PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-minecraft-accounts-reddit_GM479516143.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
font_00_sfnt_off0000232b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x232B 21960 bytes
SHA-256: 58010e6b4d34397dd1dc8ac109b01aab8a86b22235e7379f3c2fe2b805ef10e3
font_01_sfnt_off00005324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5324 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off00005ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDD 18248 bytes
SHA-256: 9d8c9ff8f23476e9e897d50e05ba1c89fe9a64794c9c08e4c2e4cb1c87253222

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