Malicious PDF — malware analysis report

Static analysis result for SHA-256 60fd8415a1b07543…

MALICIOUS

PDF

32.0 KB Created: 2021-07-21 08:21:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b50a8f91f262b356779d7d1a19fda45c SHA-1: 92e0799aee4c9fb7d07790d7d4353f407b9e9d2c SHA-256: 60fd8415a1b07543c6fdd81b81bb7f5e007027ee632a792ac7705f434a5a14f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising "free generators" for games or services. The primary lure URL is http://netcdn.tw/app/835599320/free-fans-on-tiktok-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into navigating to potentially harmful content, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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-fans-on-tiktok-game-hack In PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA2 21940 bytes
SHA-256: ab9fc2e9a9764b39ae8f224f3106488738fd5d1a6017c66a6e19a696e4413f83
font_01_sfnt_off00005cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAE 17684 bytes
SHA-256: c4bad94708efb6699dc1c2f19668affdeb9abfa27890915707a4ba319d25bbbf