Malicious PDF — malware analysis report

Static analysis result for SHA-256 39dac62d5e6924a9…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 19:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 95f09523fb5fe8c7c681b53cbf51d26f SHA-1: fc84b414edd4471b9b6c94103805cfd1e1fc008d SHA-256: 39dac62d5e6924a9f987e477bd081036a4597aaba97281a0b25ccb39a1dc5233
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks and generators. The primary lure is a link to 'how-to-make-your-own-minecraft-pe-server-for-free-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack, likely initiated via a spearphishing attachment.

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/how-to-make-your-own-minecraft-pe-server-for-free-game-hack In PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-membership-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/50-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/free-pe_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/game-codes-eu-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/roblox-best-free-mod-menu_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/robux-rewards_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/pumpkin-guts-free-robux_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_off0000321f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321F 22672 bytes
SHA-256: 7f955fe09d1ef4d08403b99958ecec8fb12d8de1e66c55f1e055f1a9e20f8f5d
font_01_sfnt_off000064bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BC 18900 bytes
SHA-256: b0df4deb82070028e0d22c60232b6b3179353926a3a5e8fc0d5a0185ddcbde20

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