Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7306b9171248a0…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 03:16:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d0136e2f337a8ad33f75f47193004386 SHA-1: 71deb55cee76878173d12806d271e8d02ca710f9 SHA-256: bf7306b9171248a086762535e400cad04b07ca2528adfe4122041a39ff403ac8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The document body and extracted URLs strongly suggest a lure for users interested in such topics, leading them to potentially harmful sites. The ML classifier also flagged this PDF as malicious with high confidence.

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/431946152/strucid-aimbot-game-hack In PDF document text
    • http://librarysenior.com/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://librarysenior.com/repository/fart-attack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/oginject-co_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-codes-2021-september_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/robux-hackhttps-pastebincom-mc23cpnm_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/actual-free-robux-no-human-verification-no-offers_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/robux-game_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-hacks-jail-breal_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/free-robux-generator-no-survey_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C26 22028 bytes
SHA-256: 2639bac53ef34e949fae26ca246233c169fe12ad91647b74799f040fd4efc55a
font_01_sfnt_off00005c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C95 19000 bytes
SHA-256: 7aa7d3638efe39ce201bced34717b630daade6b493ca12c61c93c4a944a6a2d2

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