Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee27806d8ddebd1…

MALICIOUS

PDF

33.5 KB Created: 2021-07-21 03:41:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 309a63b7c3464a0ef8507000881d497f SHA-1: 560aae1a0ef12b14e50d3863c106c240b837e37e SHA-256: cee27806d8ddebd12796d48c1b463dafbc166d10e630e1439855e4da5c63cd18
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users with promises of "free generators" or "game hacks". The primary malicious link is http://netcdn.tw/app/835599320/free-tiktok-accounts-with-followers-game-hack, which is designed to lead users to potentially harmful content. The document's structure and embedded links suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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-tiktok-accounts-with-followers-game-hack In PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://www.atuweawani.org/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.tiktok.com/fypIn 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
stream_002_off00002d8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D8D 23116 bytes
SHA-256: a24d5ad457a4dc27e5991b40aaaac339cef4b7030ee065cc3dd8ff5733169dab
font_01_sfnt_off00006186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 18200 bytes
SHA-256: 00ff3188f7c2cc6f3bb1e48311a72fd536e799d3f1f3caf1b59355958851fd7e

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