Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c11d1a5d0a1504…

MALICIOUS

PDF

49.1 KB Created: 2021-05-16 23:17:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 77ea134a7768d5827c99da61338bbb59 SHA-1: a050f53c56b04e8091a5d26bceaa0a932a7a3daf SHA-256: b7c11d1a5d0a1504553f13d9f005460f3500372e7056f8639aa67b80c612bd5d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, with one link identified as a malicious redirector. The document body and embedded URLs suggest a lure for users interested in obtaining in-game items, which is a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of malicious links indicates a high likelihood of leading the user to a compromised site or a download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/how-can-you-get-robux-game-hack In PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ba0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA0 27760 bytes
SHA-256: bb9277425a05d4b04000da211ef0e0b81d6b66ad932c77072ab7d74df2cf66c8
font_01_sfnt_off00008b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B26 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_02_sfnt_off00009c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C97 18508 bytes
SHA-256: e001fb7f5401862ae7bfe8451ef812ade6eb76ff5b39a99ee1f5160965f9e068

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