Malicious PDF — malware analysis report

Static analysis result for SHA-256 73b3531c07cd29f2…

MALICIOUS

PDF

40.0 KB Created: 2021-05-23 17:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8de910ad1a9e8cc6ca2216c0f7680927 SHA-1: c2c4b966d0904573d2f95d5777c3eca03771c2cf SHA-256: 73b3531c07cd29f2e9a842a8f4fe22f37505c2d920d71d47136ece692fbd40cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to external websites, identified as malicious redirectors. The document body and heuristics suggest a lure for "game hacks" or generators, aiming to trick users into clicking these links. While no scripts were directly extracted, the nature of the links and the PDF format suggest potential for further malicious activity, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/479516143/how-to-make-a-minecraft-server-for-free-game-hack In PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003619.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3619 26128 bytes
SHA-256: ae3580fb5f9f4a132d6b6075c7cbc8db837b3ddc78a4726e9625ec30d11101df
font_01_sfnt_off000071d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00007b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B76 18156 bytes
SHA-256: 7ebd6cc6f7d73451d43dfe99dc02d56d86c4e3c51693199467050b16fbe82799

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