Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf19d7d1cfdb6c9…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 20:28:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a471d53a413021e45496908e3f2a25e2 SHA-1: 76123014fc332e9972fb337335cd19d4f4306755 SHA-256: abf19d7d1cfdb6c95b4c30d83aff7df3620c8dd53528c5a41a0cc33559737ee1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users. It contains multiple links to malicious redirectors and further malicious PDF files hosted on `samavetpharm.com`. The primary redirector URL is `http://netcdn.co/app/431946152/greasyfork-free-robux-script-game-hack`. The document body and heuristics indicate a social engineering tactic to drive users to potentially malicious content.

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.co/app/431946152/greasyfork-free-robux-script-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-games-that-actually-work-no-password_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/earn-rbx_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/robux-hack-no-verification-human_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-jailbreak-hack-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/robux-offers_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-cards-generator-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coins-master-hacks_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_off00002f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F12 21892 bytes
SHA-256: acdd69af20815997b1db342c8a835552c0dd85b3ff6dd5161ea5f14f03f3770a
font_01_sfnt_off00005f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F40 19464 bytes
SHA-256: 5be4902aab337dd899dc7158ef0566d7af07eb858952e9aef12b97480ee8718f

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