Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f24a8ecdff2ce2b…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 11:31:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cc25e2acac590eac15a6d5b74006e27e SHA-1: 1831cac31c5278944efd36a1b96c93b319e018e4 SHA-256: 4f24a8ecdff2ce2ba613b05560e174945f9952326ed5718d9e447f18cef446b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics suggest a lure related to game hacks and free in-game currency, indicating an attempt to trick users into visiting malicious sites. No scripts were extracted, but the presence of embedded URLs and the nature of the lure strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/tower-of-hell-roblox-hack-game-hack In PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/www-coinmaster_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kotabekasi.com/__statics/gudangsoal/files/coin-master-twitter_GM406889139.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
stream_003_off00004b3d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3D 25992 bytes
SHA-256: a3671fedaba983a65b0c9a96831fc97e1cfdf3af88d04bd26a5c7506b06f5bc3
font_01_sfnt_off00008790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8790 18344 bytes
SHA-256: 03b0a99fcd61db89faa26c1828de523dc9cf9d0c2b9dbfe52dc8b55ccb7305a4

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