Malicious PDF — malware analysis report

Static analysis result for SHA-256 2630c30fb5cf5bc4…

MALICIOUS

PDF

48.1 KB Created: 2021-05-14 15:19:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 454db1b8549353727ae96935df84a9f8 SHA-1: 09c9a917993dd2fb424d8c3873551d02ed7b7f2c SHA-256: 2630c30fb5cf5bc42a90e77e66208a11b526021f02415c4947fe5c29acd13be5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a free generator or game hack. The primary link redirects to malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious intent to redirect users to potentially harmful content or further phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/479516143/how-to-get-minecraft-windows-10-for-free-2021-game-hack In PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/game-toolbox_GM479516143.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-free-attack_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_off00004c20.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C20 29572 bytes
SHA-256: 778a79057fe85fdf2b4d961681ede68f8642e8f4d5b4dc776360d6b93fd80c0f
font_01_sfnt_off00008ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF3 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00009892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9892 18648 bytes
SHA-256: 354bb2c2c4fae14b5c7df711c8f5a389dfe67cd832e4a835714c7b2f7ea7fa4d

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