Malicious PDF — malware analysis report

Static analysis result for SHA-256 f178e4ecf7fbddbe…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 20:43:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b80d3463243ce51b0e24734eac81e21e SHA-1: fd201e4fb339c2e0da27752a9bc835dfc072be62 SHA-256: f178e4ecf7fbddbe23efa10bf4b76ab693035fd3b08d2fcaa58b5c67adebc478
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures for popular games. These links ultimately lead to URLs that are likely part of a phishing or malware distribution chain. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-free-spins-iphone-2021-game-hack In PDF document text
    • http://linens.kiev.ua/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/is-minecraft-dungeons-free_GM479516143.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_off00004abb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ABB 26152 bytes
SHA-256: c40c1dfd6c9d8b5d890121addd8ed6b435b19741ab14ca5b26519940ddafc8fd
font_01_sfnt_off000087cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87CB 18452 bytes
SHA-256: 45ad27543a49c898776f855681f4f09ab56419ac2d2d547d682fd7da6b584f36

Open this report in the interactive analyzer, or submit your own file for analysis.