Malicious PDF — malware analysis report

Static analysis result for SHA-256 e836a682c02f7c42…

MALICIOUS

PDF

38.4 KB Created: 2021-05-14 20:32:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8893d07e7a20d8ab5df8322fd77ca06c SHA-1: c7ec73184d17229a229460cfeaa975f4558fc4fc SHA-256: e836a682c02f7c4208812a883fbd16827ad6878f794105c17433f0ca9c1122d4
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it links to malicious redirector infrastructure, specifically a lure for a "free generator / game hack". The embedded URL `https://netcdn.xyz/app/431946152/robux-free-gift-card-org-hack-game-hack` is identified as a malicious redirector. The document body also contains similar text and a call-to-action phrase, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/robux-free-gift-card-org-hack-game-hack In PDF document text
    • https://discordIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003647.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3647 25804 bytes
SHA-256: 49948598f3cdb0af2df62fcb74e639ad970f9cd2abca4b3d5615fb1ff22cecc2
font_01_sfnt_off00007291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7291 19096 bytes
SHA-256: bb2bfd1b5c80cb1744cd57562806e4410c1e72fb9e1ed3dff7cfd9b3dcead9ac

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