Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e55ed86d32e838…

MALICIOUS

PDF

40.9 KB Created: 2021-05-20 23:49:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8560e77f1befa8ed24c6c4948fb8858c SHA-1: 5e16279150d465ec9bc13c38d3746ae2e2d9384f SHA-256: 57e55ed86d32e838c3eaf59442e30606ecbcf0a0a5cf2d04b55313109b8a1a00
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures for popular games. The document body also contains text and URLs related to obtaining free currency or hacks, reinforcing the lure. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-free-robux-com-game-hack, which is likely used to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7445

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/431946152/roblox-free-robux-com-game-hack In PDF document text
    • http://www.inoxograde.hr/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/mcpe-master-coins-hack-download_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_off00003496.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3496 26632 bytes
SHA-256: 2ebdd806eabb7260c7ebfb6e3ed627ee0006fcc6712eae875d982ae7426cfbc7
font_01_sfnt_off0000714b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5D 18348 bytes
SHA-256: ea71f63ad969ac354b647f6e6da4581b14ed625e24a3109b04dcf91fda1e68c2

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