Malicious PDF — malware analysis report

Static analysis result for SHA-256 59aaa6819b79cfa6…

MALICIOUS

PDF

42.9 KB Created: 2021-05-13 16:33:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ab73e29586a138705f95f1e34e166645 SHA-1: d8c5ed6233bd8ab76760fe3f90f82a2532aa73ba SHA-256: 59aaa6819b79cfa6613ab81e54957aeb4822db7258f2d2a287f541907508898a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free in-game currency, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. The embedded URL likely leads to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-no-survey-game-hack In PDF document text
    • http://riccardodurso.it/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/wurst-commands_GM479516143.pdfIn PDF document text
    • http://riccardodurso.it/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://riccardodurso.it/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://riccardodurso.it/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://riccardodurso.it/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/coin-master-free-cards-2021_GM406889139.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_003_off000048d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D1 26536 bytes
SHA-256: 64148e7c52de366b94b71c944525dc985741c33725298f91365d6c352860e803
font_01_sfnt_off0000852c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852C 18308 bytes
SHA-256: d3a10f634c5ecc3d7353c949fdf4d39280fe41fff4e373acd575ae0d5bea3c9d

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