Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e5e169a6e33c90…

MALICIOUS

PDF

44.6 KB Created: 2021-05-12 19:03:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9da10d14648f5f8ba7578e8194d06b26 SHA-1: 6a0c468607c2f55cbfdad339e0b1f03293256cb4 SHA-256: 75e5e169a6e33c9005be94285d8043fa464c6a260eae76e3314f6f11d8327271
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as "free generator / game hack" lures. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to redirect the user to a malicious site, likely for further exploitation or phishing.

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/406889139/www-coin-master-game-hack In PDF document text
    • https://bwsrubber.com/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-blogspot_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-sexually_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/202100-free-spins-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_off000046e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46E5 26180 bytes
SHA-256: 84a18c61059a2112a14dcffba4f74e38a0a4ab469175e3fa14928fd93e535b0c
font_01_sfnt_off0000830d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830D 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAE 17908 bytes
SHA-256: 6f31903e710e2f0fcec5102e216c8b2505ef46bc9ceeb62cc07342564c5c8e6e

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