Malicious PDF — malware analysis report

Static analysis result for SHA-256 307c657006d66379…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 05:07:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b4ccd9d8994305dd96ef99dbd773481b SHA-1: e579dfcc0c55ba872bc7947d5364ba1fdadd48bf SHA-256: 307c657006d66379159c189ae8d29132f850bb11cfcbe1260fa36090779a04f9
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to a 'free generator' or 'game hack' lure, aiming to trick users into downloading potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of known malicious redirector infrastructure reinforces this assessment. The document body and embedded URLs suggest a scam related to in-game currency or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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-robux-live-stream-game-hack In PDF document text
    • http://elearnfactory.com/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/dlls-for-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-youtube-denis_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F67 22664 bytes
SHA-256: fd500660c2f54a85cf9c7dba9e3e8b23f0f268dbf1b000bed921282f391efb38
font_01_sfnt_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 19316 bytes
SHA-256: 3da8d9aa06a2490697cb5b51b8869394101e01d84a6e921d53c1b0381797e06c

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