Malicious PDF — malware analysis report

Static analysis result for SHA-256 000432c6a0d18042…

MALICIOUS

PDF

34.3 KB Created: 2021-07-07 00:06:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b27742bfbc7b84f4d97deed499992fea SHA-1: 8048635a014a8b4f8047bf16847d2ff649747519 SHA-256: 000432c6a0d1804228df9c21289f7731dbc743c1e9cc97f0a542b5f5317056c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coinmaster-free-cards-game-hack. This lure is designed to trick users into believing they can obtain free game currency or hacks. The presence of a visual download button further supports the deceptive nature of the document. No scripts were extracted, but the primary attack pattern involves social engineering via deceptive links.

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/coinmaster-free-cards-game-hack In PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-ios-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-roblox-lua-scripts-book_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/80-robux-hack_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
stream_002_off00002e92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E92 23252 bytes
SHA-256: fcc420f64525293de839031e0dcfdb6d3986d386ed79e46f12c32671ec5a4396
font_01_sfnt_off0000631a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631A 18432 bytes
SHA-256: 7b832aa1fcf343a711adfee6e90e6c944069d3fd26e32b4965080e89e0097fa3

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