Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d92165d0dcac0a…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 09:06:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b7fba7456fa15408c42b29e5711aa5c1 SHA-1: aa835fe2e3fd222271fd1e8291f043ea96289770 SHA-256: e4d92165d0dcac0acdda291a61033abea5fcd19963768ada0773c2c238c68715
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks and generators. The primary lure is a 'free generator / game hack' for Roblox, directing users to http://netcdn.co/app/431946152/free-spark-wings-on-roblox-game-hack. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to potentially malicious sites.

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.co/app/431946152/free-spark-wings-on-roblox-game-hack In PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/pubg-4-uccom_GM1330123889.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/exploit-hack-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/robux-hack-no-verification-humaine_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/fly-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/hack-jailbreak-2021-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-free-font-download_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.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_off000030ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AB 22224 bytes
SHA-256: e55de280582803dc08a8263a22753068f470a941167a60bd6d9f60dfb33adb6a
font_01_sfnt_off00006258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6258 19316 bytes
SHA-256: 48f44b2d83751078c73fa2d6967db06ec22a86eac1560b4276666a83fe1384d1

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