Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa3b174fdbaade4…

MALICIOUS

PDF

50.4 KB Created: 2021-05-18 01:10:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07329a6cb4aa8ecdc7b7bdebb8c6dba0 SHA-1: e1085f051b999fd68e4fef72245dbb0bfa3cd608 SHA-256: dfa3b174fdbaade467c1b71920346635db114a326468d1745ed1efbbff76a0f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as "game hacks" or "free generators". The primary malicious link identified is https://netcdn.xyz/app/431946152/how-to-hack-peoples-roblox-accounts-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to lead users to potentially malicious websites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/how-to-hack-peoples-roblox-accounts-game-hack In PDF document text
    • http://daksz.hu/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daksz.hu/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://daksz.hu/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://daksz.hu/images/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://daksz.hu/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://daksz.hu/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://daksz.hu/images/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://daksz.hu/images/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://daksz.hu/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://daksz.hu/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://daksz.hu/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004981.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4981 26356 bytes
SHA-256: 9cc23fbfb65f2b7566405f60f6c795d07d9ef9cb02d99b40501010af88452f11
font_01_sfnt_off00008684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8684 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9327 5756 bytes
SHA-256: a7a69a356750c58f853193ac64834dcf3e4080fc2a8f6e9107645a696c81e11e
font_03_sfnt_off0000a079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA079 18920 bytes
SHA-256: cd7407ef9aef6c4c50b1fdf01e763fd2e22944ade267215dee183f168e7b87f5

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