Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cbae735944e50b0…

MALICIOUS

PDF

43.8 KB Created: 2021-05-16 00:09:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5a9b1dd490d121d1a6b3edc12640d39 SHA-1: d14a9c4355ff2729fcf023566de5f785c956908c SHA-256: 3cbae735944e50b0272bf9ff2ff8b3ba52d7f4eac5fe05609f2bb21f314c0536
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, disguised as a lure for free game hacks and currency. The document body, though partially corrupted, contains text related to 'Redeem Roblox Card Free' and embedded URLs, reinforcing the lure. The presence of embedded URLs and the nature of the lure strongly suggest this PDF is designed to redirect users to potentially harmful websites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/redeem-roblox-card-free-game-hack In PDF document text
    • http://truebibleteaching.com/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-spins-coin-master-hack-2021_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
stream_003_off0000463f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x463F 28392 bytes
SHA-256: 56a2713367ced25262f672f3aa737a20fa87bedd68a5971769b70178bbe71d9b
font_01_sfnt_off000087f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F9 18612 bytes
SHA-256: 60f5a1d5a0775e45587e850c673dfad554e932795a56f36892a7298ffe0bc887

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