Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4e62c45c7670ec…

MALICIOUS

PDF

46.4 KB Created: 2021-05-11 03:41:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 2ba655604bbee5a03196df44d0432c3d SHA-1: 2f5b26e85a47eee70691f8672c76ac4246999771 SHA-256: 9f4e62c45c7670ec2c8036f4478694f25bcd39dd2ce6585f0a930a9a511ecc71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and free spins. The document body and heuristics indicate a lure for potentially unwanted or malicious content, likely leading to further compromise. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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 https://netcdn.xyz/app/406889139/best-free-spins-for-coin-master-game-hack In PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-data-breach_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-points_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A3 27788 bytes
SHA-256: c0c2d068e2e0fc3d3379ad082315e129b0060aaaecff050247ddbb09a62604b3
font_01_sfnt_off000089c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C7 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00009368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9368 18104 bytes
SHA-256: 265810a533179ed4911351fbf1b80b3cb768f85036b1ca3bcdd0395585e16b03

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