Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dcf50fe589ef10b…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 22:23:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 919a0076839f8cc0d6ef3fe3dd535bff SHA-1: 39d2476411da8900aa261db9e60445ce132fea3c SHA-256: 0dcf50fe589ef10b7e74ee8f75eb25b6134b9a8b75b737139f540b72a1eb15c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'game hack generator'. The ML classifier also flagged this PDF as malicious. The presence of these links suggests a phishing or social engineering attack aimed at tricking users into visiting potentially harmful sites.

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/406889139/coinmaster-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/lego-hacking-roblox-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-shirt-free-copy_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-a-roblox-account-with-roblosecurity-cookie_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-items-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hacker-tycoon_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-counter-blox-hack-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-games-at-roblox-2_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F29 23080 bytes
SHA-256: 327e21c163264cf6a8afc52ec286e2708466ce6cbd8d090afb75a19284d28227
font_01_sfnt_off0000632b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632B 18092 bytes
SHA-256: aeec47090e2d397d52e6994ac52fcd26f4fdd646fe6594f845e9ca54af877ae9

Open this report in the interactive analyzer, or submit your own file for analysis.