Malicious PDF — malware analysis report

Static analysis result for SHA-256 88044366d020d2b5…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 16:04:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a6d526f8b119c7b26a09d72efa721232 SHA-1: 03d06b15c3cb39c03bddb55e7cb8581e16b281a2 SHA-256: 88044366d020d2b59815d27754df5a796ab3107a948b0b61268d32b886a83705
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/free-coin-master-spins-hack-game-hack. The document body and embedded URLs suggest a lure for game-related hacks or cheats, a common social engineering tactic. The presence of these links indicates an attempt to lead the user to malicious content, likely for further exploitation or malware delivery.

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/406889139/free-coin-master-spins-hack-game-hack In PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/robux-free-2021-hack-pc_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/robux-hack-2021-creado-por-hackdejuegosapk-roblox-tm_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-free-injector_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-give-yourself-free-robux_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/rbxdemon_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-rocitizens-cheat-engine-unlimited-money-hack_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-hack-gg-uardika_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/minecraft-pocket-edition-hack_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_off0000339e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339E 22340 bytes
SHA-256: d561170e795b85969748baa06a2117f6aeadaa00519388eb43d5569fc3e016ac
font_01_sfnt_off0000655b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655B 18344 bytes
SHA-256: 4d0657ae61433a99d4c3f327acf405e508756c248fc53430885ddf01c25216ba

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