Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed3153eb14c67f5…

MALICIOUS

PDF

42.1 KB Created: 2021-05-31 10:12:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbe93487a9afa8e026c9bb917285622a SHA-1: 6910d3f2113eb09239fd30c01964b5d12da0f0b9 SHA-256: aed3153eb14c67f51ecd21f301e1e93fa12436b7c3e2ec659207d0b7e3d25ca6
130 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'free Robux' and a 'game hack', directing users to a known malicious redirector URL. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment. The embedded URL is the primary indicator of malicious intent, aiming to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0286

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/how-to-get-free-robux-5-ways-game-hack In 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_004_off00003bfc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3BFC 25608 bytes
SHA-256: 0d0741086f3b84bec879f5f9b8551b153f8300566e8062cc648224a91fc3005e
font_01_sfnt_off000076b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B7 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8065 19020 bytes
SHA-256: 520f4ea58f8ff2d42b8d0d675f4155fe517fbb2ec9223ecb5c9e62f4bf74077f

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