Malicious PDF — malware analysis report

Static analysis result for SHA-256 f444f6e72a2c20cb…

MALICIOUS

PDF

35.9 KB Created: 2021-06-20 19:25:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 90d678cd09298ac90c658b29d6c2266b SHA-1: 496d9e811902a771ef84c719d7cc1c1eb26c3975 SHA-256: f444f6e72a2c20cb51ee55786ea326f66c641557c47d6e214834dde53ea0296a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a 'game hack' or 'free generator' lure. The document body and embedded URLs reinforce this theme, aiming to trick users into clicking through to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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.co/app/431946152/como-hackear-roblox-apk-mediafire-game-hack In PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/tiktok-free-10-likes_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/mcpe-116_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-free-game-passes-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3232 23436 bytes
SHA-256: 2fda888a9e1f9f81d8dc005462f5c9a8db609ee7165d94b5943808863ad86f42
font_01_sfnt_off0000661b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661B 19580 bytes
SHA-256: a2770fb486904097e5609591db9eea8d1fe55b9161322bb954823221e0da90e6

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