Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa3fce24c83c55e…

MALICIOUS

PDF

41.8 KB Created: 2021-05-21 20:01:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b15af392bff1edddb7b330fbf61a4fc SHA-1: 0756b3baa9a92ef4d5da94bc46749ba7dbd388ae SHA-256: 4aa3fce24c83c55e7730e7174a3072241894b24865f0fbdb49a4c956aedf03bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector hosted at 'netcdn.xyz', which is flagged as malicious. The document body and embedded links suggest a lure for game-related cheats or generators, a common social engineering tactic. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious nature. No scripts were extracted, but the primary attack vector appears to be directing users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8120

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/free-spin-coin-master-2021-game-hack In PDF document text
    • https://www.cayosalinas.com/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.cayosalinas.com/images/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://www.cayosalinas.com/images/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • https://www.cayosalinas.com/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.cayosalinas.com/images/robux-generator_GM431946152.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_off000034ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34EE 30068 bytes
SHA-256: 04f3f53842b5f6a3b31aa72f61b7fc620146bba2ee339bd4893ad30720710c44
font_01_sfnt_off0000780e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x780E 2956 bytes
SHA-256: cc6ee08a5af07cdf809d5f718a6f4b581fc47059b13d069ac995502e41039ee4
font_02_sfnt_off00008231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8231 18288 bytes
SHA-256: fd0044dd07fea29fabb02cccaad095bc879ba68536b4dede47c40461e88c70e2

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