Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba2f879785d2cea…

MALICIOUS

PDF

32.5 KB Created: 2021-07-19 18:55:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0e38f84db51d1a52ee22ff44ff2a6e61 SHA-1: 2ce1083b2ee8bb557bac0e066b2baa354fab5a65 SHA-256: 1ba2f879785d2ceabd009fa9fb5cc00b1f91ec8f6dae77a81955b63e109ac757
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free TikTok followers and game hacks to entice users to click on embedded links. The primary malicious link, http://netcdn.tw/app/835599320/free-tiktok-followers-instantly-game-hack, is identified as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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-tiktok-followers-instantly-game-hack In PDF document text
    • https://bagliomangiapane.com/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://bagliomangiapane.com/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://bagliomangiapane.com/images/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://bagliomangiapane.com/images/free-robux-script_GM431946152.pdfIn PDF document text
    • https://bagliomangiapane.com/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://bagliomangiapane.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://bagliomangiapane.com/images/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://bagliomangiapane.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://bagliomangiapane.com/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://bagliomangiapane.com/images/coin-master-free-spins-daily_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_off00002a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2B 22804 bytes
SHA-256: da5a835c5fd0c65cb82a235e60decd645282483705e184e1218614b384771297
font_01_sfnt_off00005d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D84 18100 bytes
SHA-256: f27faf11ab9b731ff59c8a2736de67f71ae1dcd874c0843e76df7710bacb1c6d