Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b774561eb29e601…

MALICIOUS

PDF

43.4 KB Created: 2021-06-04 02:15:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 923abe7bbdb79a8911417d7faedcd8b1 SHA-1: 645ecf765cab1fe44757b2dfde9d1078cc1d99d4 SHA-256: 7b774561eb29e6015c0ed8509aeff7ff634f0b6739321f9229c9bd71cb132ac2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a visual lure suggesting a download. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs point to game-related 'hacks' and 'free coins', indicating a social engineering attempt to trick users into downloading malware. No scripts were extracted from this sample, but the presence of external URIs and the ML classification suggest a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-coins-coin-master-haktuts-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/pubg-uc-dark-web_GM1330123889.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/tiktok-free-pc-download_GM835599320.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/tiktok-free-view-uk_GM835599320.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/tiktok-free-fans_GM835599320.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
stream_004_off00004f4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F4F 25240 bytes
SHA-256: 7373a139f84e8336c8e9b60655cb8c65f05e5382681b6257c787eb45ed44643f
font_01_sfnt_off000087e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E4 18020 bytes
SHA-256: 885405c0f3c82632f67cbbf76e9de88f1d1af146284216a58ab90767d16be517

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