Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece0304df95d8c88…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 01:23:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 27556c9d3f607723b511960863c8400b SHA-1: 966464d70f78bae770dbfd1a787cd7f7e278ccc8 SHA-256: ece0304df95d8c88e38e626305cffc89255c3c8aead75dbdc58436621c03abb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to malicious redirectors and further malicious PDFs, masquerading as game hacks and free currency generators. The primary malicious URL is http://netcdn.tw/app/431946152/hacked-roblox-game-game-hack, which is flagged as a known malicious redirector. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

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/hacked-roblox-game-game-hack In PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-cheat-lua-codes_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/hacks-for-roblox-for-acer-one-722_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/google-roblox-items-free_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/speed-hack-script-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-hack-arsenal-pc_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-free-cbro-skins_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/give-free-account-roblox-13-jun-2021_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/free-roblox-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-nopde-engine-cheats_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/como-hackear-el-roblox-con-david-pg_GM431946152.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.ati-gulf.com/uploaded_files/userfiles/files/minecraft-pocket-edition-free-ios_GM479516143.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_off00003192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3192 22032 bytes
SHA-256: 24f7fd630181432e80b73225e8edc0a22bd9fc9d6e31c0662007060b7b235bbe
font_01_sfnt_off00006290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6290 19092 bytes
SHA-256: e06e2496ecc1c3d364978b7a8e0823831cb090cb55aacb01fa8d052e2f05e4c6