Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc861eee2e03c8b…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 02:38:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4eef4a298ffbd609df001ebff6c2f481 SHA-1: cb95bbac499557bf4bbe31b0e0eb6735c747093d SHA-256: 4fc861eee2e03c8b2b0f3d5dba3f92b4461ebd44230f69f867c03ab36dd7d935
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains lures for game hacks and free currency, directing users to a known malicious redirector. The embedded URLs and the document body content strongly suggest a social engineering tactic to trick users into visiting malicious sites. While no scripts were extracted, the PDF structure and linked URLs indicate a likely attempt to deliver a second-stage payload or phish for credentials.

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/free-roblox-money-com-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/chicago-2021-free-model-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/without-pokemon-go-free-evolve-after-trade_GM1094591345.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-stuff-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-a-free-robux-card_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/infinite-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-noclip-hack-download-ios_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/mcpe-master-coins-hack-download_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_off000032a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A2 21776 bytes
SHA-256: b760df4b26f83490352da9b6c59a55391e42828e6ec89cb268b78c29ddde1eb2
font_01_sfnt_off0000626b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626B 19284 bytes
SHA-256: ebff6a95f4d51e30060c490f8ca37d46f8b9ec7ed372d26f02a31b0b010263c8

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