Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bba287dbfc9b53…

MALICIOUS

PDF

46.7 KB Created: 2021-05-15 02:35:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eeb2062cedbe6b4115b825f67ca319c5 SHA-1: bbf97205b43e5d1d669d1ce741fbd1e5d3505c86 SHA-256: 95bba287dbfc9b5370ee561c151aaec58ad4c62493d7d2c871319e6f337f5033
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with game-related content, aiming to trick them into visiting potentially harmful sites. The ML classifier also flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the embedded links are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/406889139/coin-master-card-link-free-game-hack In PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/get-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a54.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A54 26756 bytes
SHA-256: c2f5a04da8698c99de204208906398b20395ef9cbc952d6fbed699548b380b65
font_01_sfnt_off00008767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8767 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off000094ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94EE 18056 bytes
SHA-256: 2c915f38770e083062bc98f9a3714c418532e4445745be163775e18eb12194f3

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