Malicious PDF — malware analysis report

Static analysis result for SHA-256 941844a2ea66c7d3…

MALICIOUS

PDF

45.3 KB Created: 2021-05-15 11:05:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 2eaec25f5a30fb34e68d8c07580c068f SHA-1: 4f7b44909e67b49f7eeb0d92cb320b4a26fc8c10 SHA-256: 941844a2ea66c7d3b382d0417cc6180ce0934483319aa5681db7fcd4314e25b4
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/479516143/free-minecraft-account-list-game-hack In PDF document text
    • http://stroygrad-spb.com/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://stroygrad-spb.com/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • https://education.minecraftIn 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_off00004763.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4763 27984 bytes
SHA-256: 4daf119ab8ad35e7f9fbd6bebf776991dd4534234b3213266449862bdbc8c783
font_01_sfnt_off0000858b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858B 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00008ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFE 17848 bytes
SHA-256: 5b1d54360e857fbda0e30a3304c93394a8bc996e2a6fac27502c58fec3e6bef5