Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfa84ea3d2b0155…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 23:37:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f99904ccc4e0b450cbd5bed88c1ffa4a SHA-1: 824e090509f28e269aac2f9a3c13518bdf1a0c4b SHA-256: 2cfa84ea3d2b0155d2163cfb7215f9ff85d9ce5274f6312e3d43c884dc2775ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and lures, specifically advertising free game hacks and currency for popular games. The primary redirector, http://netcdn.tw/app/479516143/minecraft-ps4-free-game-hack, is flagged as malicious. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely for further exploitation or malware delivery. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or scam campaign.

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/479516143/minecraft-ps4-free-game-hack In PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/free-roblox-clothes-reddit_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/free-robux-inspecting-method_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/roblox-free-accounts-pastebin_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/roblox-vip-servers-free_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/nitro-fun-cheat-codes-vip-roblox-id_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-catalog-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/roblox-free-iteams_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/roblox-hacks-working_GM431946152.pdfIn PDF document text
    • http://el-ma.mtsn37jkt.sch.id/__statics/gudangsoal/files/hacking-engine-for-roblox_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
font_00_sfnt_off0000308e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308E 22140 bytes
SHA-256: ace0145f4589074ea0ed0abc7f728338bceb588648542e1be69fd0baf6556c31
font_01_sfnt_off000060cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 18072 bytes
SHA-256: 07bff6b201fefb5b79bda7bcb703d65895bb3fadc7074254717ea8518f49b268

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