Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2f25f5253c2df7…

MALICIOUS

PDF

42.8 KB Created: 2021-05-11 19:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d527bb4068c653f1c0b52e493a78d6ed SHA-1: 111f7693f890ecdc17837b17e59c789ba996e18e SHA-256: 1e2f25f5253c2df7bc001126b4c8f161185db8508e6f83f4e98c52625859b52c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body and embedded links strongly suggest a lure to a phishing or scam website. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-free-spin-daily-link-game-hack In PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/huskybuckscom-free-robux_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
stream_003_off00004bef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEF 24936 bytes
SHA-256: e852b8d70f9909a2478ab44c0e36477558c58e32c00ff751cebb699df06414ae
font_01_sfnt_off00008454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8454 18476 bytes
SHA-256: 2ce97cbb308bf5ba938525f141fd625062fba94b419d6e9602582d12aef06769

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