Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d1904cf9cd0915f…

MALICIOUS

PDF

35.4 KB Created: 2021-07-07 00:17:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f2fdce27f38ffbb1a3e333198b4b2061 SHA-1: 59c18d398aae68fb3956cd5eefed0cc71eb47339 SHA-256: 1d1904cf9cd0915f18980dc9d891f911131d555304426cae7af95287528228a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and free currency generators. The primary lure URL is http://netcdn.tw/app/431946152/is-roblox-hacked-game-hack, which is part of a network of malicious redirectors. The document body and embedded links suggest a phishing or scam attempt to lure users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/is-roblox-hacked-game-hack In PDF document text
    • http://thamelinn.com/userfiles/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-hack-asshurt_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/robux-hack-without-purchase_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/is-tiktok-free-on-iphone_GM835599320.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-hacks-gratis_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-minecraft-windows-10-for-free-with-java_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_off0000323f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323F 22972 bytes
SHA-256: a49de7c8d859b311ee52f9edaf399126afdf0f7e597c42824f720d7ed16ea409
font_01_sfnt_off000065d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D5 18828 bytes
SHA-256: ffc1b06b0aa45cc1a144f1d43e95d37ff53635931ed538feab81aca2c284e8f3

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