Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7c2eb83f8ec9ec…

MALICIOUS

PDF

37.3 KB Created: 2021-05-18 02:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e7390f1f82ca464fa25393d5c190fd37 SHA-1: b5d9bf80b140a3e8866111f15b98c2b7a4167d0d SHA-256: 1c7c2eb83f8ec9ecaf816d0e3bc2d4febb8bb3d063bcc9ae0e380b2947875846
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to a URL associated with 'free Robux' and 'game hacks', a common lure for scams. The presence of a 'download button' heuristic further supports the malicious intent of tricking users into clicking the link. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or scam 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/free-robux-no-verify-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_003_off00003284.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3284 25800 bytes
SHA-256: 04ceba4823d0df2a059b91814e55b2af150ae44662c6b52a0efe25fab469a6ba
font_01_sfnt_off00006e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E79 18848 bytes
SHA-256: 9f147bd5bf62c652754f553854fad05fac0b8df637ce3021f80b740c61e7be7f

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