Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf7f330b7f42d5f…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 06:58:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 466aadfbf7a11219f0a6fa3da7f1876a SHA-1: 6c740f5ec4e5374e99249639a880800aa67b8ea6 SHA-256: eaf7f330b7f42d5f872b5112ee58620e75c89abbbf5bd10a4a003d44144ee27e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free currency' lures. The primary redirector URL is http://netcdn.tw/app/431946152/oprewards-com-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at driving traffic to potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/oprewards-com-robux-game-hack In PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/get-verified-tiktok-free_GM835599320.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/design-it-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/born-to-hack-roblox-group-logo_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-jailbreak-cheat-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/notoriety-hack-script-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/pokemon-go-free-xp_GM1094591345.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/cheat-codes-for-roblox-mad-paint-ball_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-roblox-hackingcom_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/what-pubg-uc-code_GM1330123889.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_off00002bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCB 22268 bytes
SHA-256: b3387f55988af427069836a279105923f59d9b4726b9c4b529fe1aa379864fd5
font_01_sfnt_off00005d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D53 19324 bytes
SHA-256: 35589dba4e7bbe14e1ea02444a76fb8b1cb592c0f5e8a7b1a407e52a29e90510

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