Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ef3d5c03c0dedc…

MALICIOUS

PDF

45.7 KB Created: 2021-06-10 23:04:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d5e0b02d41b4175a8c385fbf76a01542 SHA-1: 4547f35898af930b12589b9de2dee4b4cb75c7e6 SHA-256: 84ef3d5c03c0dedca375cb309375bf329e1d2ed26591477b80a02a0195e6ea1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' for popular games like Roblox. The primary lure is a 'Roblox Hack 2021 Download Free' which points to a known malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-hack-2021-download-free-game-hack In PDF document text
    • http://dana1157.com/images/how-to-hack-speed-race-roblox_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-btools-and-speed-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-cards-2021-march_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-tiktok-25-likes_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/is-there-any-way-to-get-free-robux_GM431946152.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
font_00_sfnt_off00004f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F90 27388 bytes
SHA-256: 9341025cab2ff443b5cc5ebbb785c983375ad16f4e89bbf87b6babd7a76a963b
font_01_sfnt_off00008d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D23 19252 bytes
SHA-256: 5f2f9c84770a07445d421b113146d469652d0b8164ca93c205712d567bec6f15

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