Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eafa06cc04f2728…

MALICIOUS

PDF

35.7 KB Created: 2021-06-26 22:42:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 944e4d1ec90fea5758d1748416c676c2 SHA-1: 886195205e9aae4f5e470c4686fe33c0196280ce SHA-256: 9eafa06cc04f2728f635f9363b58d553e4dd5ac9dae9f0d4e97781054af37195
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game points and hacks, which is a common social engineering tactic to trick users into clicking malicious links. The primary link identified, http://netcdn.co/app/431946152/free-game-points-how-to-get-free-robux-game-hack, is flagged as a known malicious redirector. The document's structure and embedded URLs suggest an attempt to deliver a malicious payload or redirect users to a phishing site.

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.co/app/431946152/free-game-points-how-to-get-free-robux-game-hack In PDF document text
    • https://www.tiancom.com.tw/upload/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-hack-shader_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/nisterv-free-robux-hack-youtube_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/haxteamcf-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-2021-easy_GM431946152.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_off00003406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3406 22080 bytes
SHA-256: d934db2f0dfa509ed99dfadb6a885aa5547df0a40ded424a36c55e7f33454d4b
font_01_sfnt_off00006541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6541 19516 bytes
SHA-256: dc566eda7dfeb58a22f7eed14d14b807c0f57ab37ba36afe22dce0cb3eefcc50

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