Malicious PDF — malware analysis report

Static analysis result for SHA-256 5310d12649e83448…

MALICIOUS

PDF

43.6 KB Created: 2021-05-15 04:07:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 43060a207c73e1cacb80f38e8f4f5842 SHA-1: 7cf0c4de074fa1741df9c5825708bdf202cf274d SHA-256: 5310d12649e8344817d58b5a882fa604f10ee0e3968a37ea19982c6ed297aace
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, which is designed to lure users into downloading potentially malicious files. The document body, though heavily obfuscated, contains text related to game hacks and the redirector URL, suggesting a social engineering attempt to trick users into clicking the link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 3

  • 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/legit-coin-master-hack-site-zyngaplayerforums.com-game-hack In PDF document text
    • http://bildhauerei-roerig.de/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/block-best-robux_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off00004aee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEE 25700 bytes
SHA-256: 8be8466beaaa5fcfc4a86537b81a4582dfcf2f03f86b953df6043959de6530b9
font_01_sfnt_off00008633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8633 18996 bytes
SHA-256: c7201ec4c3a8de5860eeb2e6c9e6c90ee147184e9a3338a06e2bc3af5219e027

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