Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e2339c2f1c4eb3…

MALICIOUS

PDF

33.3 KB Created: 2021-07-07 20:47:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6061ac29d16e881fcb1039405e61f4ba SHA-1: c921b92e64282a617da71b120ea5468dfb5f8cd3 SHA-256: b3e2339c2f1c4eb3fdb8e9cb4fa08cb6c224d1abf44a1f6244814c0bf18bb794
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector URL, which is associated with malicious activity and lures users with promises of free game hacks. The document body and embedded URLs indicate a phishing attempt for game-related cheats or currency. No scripts were extracted, but the presence of embedded URLs and the nature of the lure suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/how-can-i-get-minecraft-for-free-game-hack In PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-2021-android_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-bee-simulator-cheats_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-brick-bronze_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-robux-hack-2021-online-free-robux_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/youtube-robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-roblox-admin-accounts_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/hack-para-ser-bc-en-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F40 22184 bytes
SHA-256: 4fd3fc9136d1943750f8d1a7dae0a89961aab7cb25e1bf5dcc7b7cd77f26113f
font_01_sfnt_off00005fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB7 18164 bytes
SHA-256: 36a344aed73ba195317bf2b716a0c6b93324dc902034352b776dceb9555a192f

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