Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdaef11865247a51…

MALICIOUS

PDF

45.7 KB Created: 2021-05-20 13:06:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 74c6be876c87641edf4acaae77507f37 SHA-1: bb0443cbbcd78a6244af965910d67d55e3dfc62c SHA-256: bdaef11865247a511ea0b89fec734f583066cb303d7c497b5302b35234e20654
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and text promoting 'Free Robux' and a 'generator', indicating a lure for potentially malicious downloads or scams. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the presence of external URIs and the document's content suggest an attempt to redirect the user to a malicious site, likely for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7826

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/free-robux-obby-2021-game-hack In PDF document text
    • https://icefuture.ru/images/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-apocalypse-rising-hack_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_002_off00003504.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3504 29692 bytes
SHA-256: 777a932ff23102297d16b5898b1266a55a9163cc7b0dc8f6fa2b0376346f8ed4
font_01_sfnt_off0000793b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000082e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E7 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00008ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF8 18596 bytes
SHA-256: 4ee57ed15e8700d5e4346dbed35fcc2f6ba8dbed04d546ac38088c27601a53c6

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