Malicious PDF — malware analysis report

Static analysis result for SHA-256 572e3568cbc967a2…

MALICIOUS

PDF

44.4 KB Created: 2021-04-24 18:59:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 735a1a895719db30343506f4384d6690 SHA-1: b7af455a54849dc637b69c6834ecb68130691969 SHA-256: 572e3568cbc967a27c4a327b5904ea1878af832c3205cd0e4fd05cfb6b02c16b
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to external resources, including a primary link to 'netcdn.xyz' which is flagged as a malicious redirector and impersonates the Apple brand. The document body and heuristics indicate a lure for game hacks or generators, likely a credential phishing or malware distribution attempt. No scripts were extracted, but the embedded links and redirector activity suggest an attempt to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/cheat-roblox-mad-city-vf-game-hack.
  • 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/431946152/cheat-roblox-mad-city-vf-game-hack In PDF document text
    • http://hemmet-strand.dk/images/free-robux-obby-roblox-game-real.pdfIn PDF document text
    • http://hemmet-strand.dk/images/how-to-get-robux-fast-free.pdfIn PDF document text
    • http://hemmet-strand.dk/images/roblox-hack-mod-apk-2021.pdfIn PDF document text
    • http://hemmet-strand.dk/images/roblox-hack-file.pdfIn PDF document text
    • http://hemmet-strand.dk/images/how-to-make-a-roblox-bot-and-get-free-robux.pdfIn PDF document text
    • http://hemmet-strand.dk/images/how-to-get-100-free-robux-on-roblox-2021.pdfIn PDF document text
    • http://hemmet-strand.dk/images/console-free-admin-roblox.pdfIn PDF document text
    • http://hemmet-strand.dk/images/free-dominus-roblox-avatar.pdfIn PDF document text
    • http://hemmet-strand.dk/images/free-synapse-x-roblox-2021.pdfIn PDF document text
    • http://hemmet-strand.dk/images/roblox-mining-simulator-hack-script.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_003_off00004183.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4183 27580 bytes
SHA-256: 021d7838f2fbb3f285e6236b10e65a080de2dd426de8dc8d2ffb99bfd177cd6d
font_01_sfnt_off00007f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F90 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8941 19088 bytes
SHA-256: 2d6bd443c071eadc9090bd1b540c001cab882ac65753c8cb5e97c8e48cec54de

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