Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa13ff8d52c04024…

MALICIOUS

PDF

33.0 KB Created: 2021-07-20 13:43:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 727eb12c7fc8f09ed1a1498c103dc098 SHA-1: bc28b5f619ccbb5a1649771ac3613340499cf329 SHA-256: fa13ff8d52c04024d90a46877912b0007531da2e193b1791b9aa1a17997ec252
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generator / game hack' lures. The document body explicitly contains a call to action, 'CLICK HERE TO ACCESS TIKTOK GENERATOR', and embedded URLs that are known malicious redirectors. This suggests the primary goal is to trick the user into visiting a malicious site, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9449

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/free-disney-plus-accounts-tiktok-game-hack In PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.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
font_00_sfnt_off00002aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA2 23544 bytes
SHA-256: b7f1dbd16de7b1caa1d23efda64c674c4bfe9427f984a22a3bce135fec38d8a4
font_01_sfnt_off00006023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 18172 bytes
SHA-256: ba50685ceba17d4ba1c641928124270d48c75427ecdbd185af6a9cd45188b0b8

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