Malicious PDF — malware analysis report

Static analysis result for SHA-256 38626905c848361f…

MALICIOUS

PDF

45.3 KB Created: 2021-06-09 06:00:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d5ee33fbdc3dea9776beedb49a58258c SHA-1: 760ea5a4f14c40825795758bd18b2702b69cd8c0 SHA-256: 38626905c848361fe77e116c1c1e2679d09544ed7e86237fd3a922a9a6e75055
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are hosted on domains associated with link farms and redirectors. The document body and extracted links suggest a lure for users interested in game hacking or obtaining in-game currency, likely leading to malicious content or further exploitation. The presence of a malicious redirector link and the ML classifier's high confidence score indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://netcdn.tw/app/431946152/how-to-hack-a-person In PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/no-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-minecraft-servers-to-join_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
stream_004_off0000543f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x543F 24572 bytes
SHA-256: d2aa946295f70ed2848164a7753d540490b3e91a26d4c8388002796291b7ffbe
font_01_sfnt_off00008c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C91 18808 bytes
SHA-256: 361ebbb9118de483546724fec96cb5cfede10cc3cb51a12523664d307e6b0c86

Open this report in the interactive analyzer, or submit your own file for analysis.