Malicious PDF — malware analysis report

Static analysis result for SHA-256 1389041d6ea2c8ca…

MALICIOUS

PDF

36.6 KB Created: 2021-05-24 02:14:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2fd8ba3fd6c576bcfddcdfbe81c7c259 SHA-1: 297550827c1ace180eb59712d81830bffef04af2 SHA-256: 1389041d6ea2c8ca9db35ef2e46debc6ec39300d4d5f0690f987e2ed561bc062
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'game hack' lure. This link, https://netcdn.xyz/app/431946152/roblox-hacked-com-2021-game-hack, is designed to trick users into downloading or accessing malicious content. The presence of a 'download button' heuristic further supports the malicious intent of the document.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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-hacked-com-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002db8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DB8 26848 bytes
SHA-256: 8a8131e3139ba8e7a1095876a0ef92c0a41edbbd9a09c2570c0b9a0a123a89f3
font_01_sfnt_off00006b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B86 19016 bytes
SHA-256: 1bdffeea421802d48c0c5f4972bc43262882194040db90b4400103ab0d186a68

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