Malicious PDF — malware analysis report

Static analysis result for SHA-256 866f295e009a14a1…

MALICIOUS

PDF

44.9 KB Created: 2021-05-13 03:35:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 22718566c75e05723d9bf3848dcade85 SHA-1: 5cc9eb2d8051d398573d78f79b816a2cf371da32 SHA-256: 866f295e009a14a1a4cc40f5e288935f7657e78000c72fee9c884edc9ece3f98
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these sites, likely for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/robux-offers-game-hack In PDF document text
    • https://gimnaziya6.kz/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://gimnaziya6.kz/images/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://gimnaziya6.kz/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://gimnaziya6.kz/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/roblox-trolling_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/master-free-spin_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/get-free-robux_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB0 24936 bytes
SHA-256: 77bf209c8995f33473de6914700d6c0b4f64c63fd7b5de10c21bd8b5efe39ad5
font_01_sfnt_off0000844d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844D 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E37 17852 bytes
SHA-256: d996fede43d0fc1a5403a574ed382013adeb188792274686644c4f79c5d24ca5

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