Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee95ca92e678cc1…

MALICIOUS

PDF

47.7 KB Created: 2021-05-12 22:50:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f8a19cef897fa900c10e6c6130df767f SHA-1: c7f0268de5567111211a808d0f4d691b24a9244d SHA-256: eee95ca92e678cc1b0dacb9274f6ad0e0b20e824dc5059391042ecd810101048
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on what appear to be game-related generators or cheats. These links redirect to malicious infrastructure, including a known redirector. The document body and embedded links suggest a phishing or scam attempt to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/free-coin-master-coins-2021-game-hack In PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-coins-for-coin-master_GM406889139.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_off00004ce2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE2 29936 bytes
SHA-256: 1e612441baf7d66433964d212e131ecca802af0e093490b795f353c60b97b6a9
font_01_sfnt_off00008ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF9 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000098ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98AB 18112 bytes
SHA-256: b90a52bb7a513cac6c35a142a2cc06d16f7dce6089e69086c8d165c3db595bed