Malicious PDF — malware analysis report

Static analysis result for SHA-256 b83153a665349f45…

MALICIOUS

PDF

33.8 KB Created: 2021-07-09 13:11:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 99e107df7862597c0502410eb71d6000 SHA-1: 96d11eb4e36d82cbdaba1812de690da713f519e8 SHA-256: b83153a665349f45d7e0529c727cbe8015b7dd631586cbd56c4c91dbfc89ed83
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'game hack' or generator. The document body and heuristics indicate a lure to download or access content related to game cheats, which is a common social engineering tactic. No scripts were extracted, but the primary malicious action is the redirection to a potentially harmful URL.

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-online-free-download-game-hack In PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/roblox-parkour-script-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/wurst-mc_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/roblox-hacks-jailbreak-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-points_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/how-to-save-art-on-free-draw-2-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_off00003127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3127 21584 bytes
SHA-256: f988fc765819d0b427ff748455a03b1af0f2665f5f497a4dcdcd868d138f709e
font_01_sfnt_off00006056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6056 18576 bytes
SHA-256: 8b4d9d6d0ca9e61cbe976a26a5be613f13da9ada3a41151828c7777d74905711

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