Malicious PDF — malware analysis report

Static analysis result for SHA-256 a07d143b14778dd6…

MALICIOUS

PDF

41.7 KB Created: 2021-06-13 21:24:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d94597f365af1a6675b7038611b9078c SHA-1: 5edf34a9f6dc094c0b2ec29260bd2b7cfe906af1 SHA-256: a07d143b14778dd6dc3c1b024dbe6c7301133489ea06fab3b052baabf520928f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically targeting users interested in game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure further supports a malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or redirection attack.

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 http://netcdn.co/app/431946152/esp-x-ray-roblox-hacks-game-hack In PDF document text
    • http://szekelymozes.ro/images/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-coloring-pages-printable-free_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-unlimited-money-on-roblox-pool-tycoon-4_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-but_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/hacked-version-of-roblox-ios_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-robux-real-no-scam_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-goradiel-rpg-4-hacked_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-robux-on-your-computer_GM431946152.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
stream_003_off00004774.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4774 24428 bytes
SHA-256: 6d8679a185ada5d3be5b14e2843ac9e703622261674f0e3508c59b951cb665aa
font_01_sfnt_off00007f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8A 18540 bytes
SHA-256: a6e8aa383815b4bbb9f1f5966e43ea004892c1bd1a56dfb1bc1106b2ec19a280

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