Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c2ec1983bdc1c9…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 04:02:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a0554722336683bb8cd891c3ea4cd492 SHA-1: 56beb2613d4c2b580302e357db8b3430f6617a6d SHA-256: 45c2ec1983bdc1c987879b27816a56e960109cb67fed6b712de2996f6652d6c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator' and 'game hack' lures. The primary URL, http://netcdn.co/app/431946152/ulgamesresources-com-free-robux-game-hack, is identified as a malicious redirector. The document body and heuristics confirm the intent to lure users to potentially malicious websites under the guise of free game-related content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/ulgamesresources-com-free-robux-game-hack In PDF document text
    • http://viemeo.fr/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://viemeo.fr/images/tiktok-free-beer-for-a-year_GM835599320.pdfIn PDF document text
    • http://viemeo.fr/images/robux-converter_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://viemeo.fr/images/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://viemeo.fr/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/free-roblox-accounts-with-robux-2021-november_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://viemeo.fr/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off00002c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C70 22628 bytes
SHA-256: a266344174b50968abcbb0dc02b3a8401ef0587cf6db106b35c228c3297b55d7
font_01_sfnt_off00005f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F36 19052 bytes
SHA-256: e73d616f28e840ae3df6f80fbda0eda2bf8e85d1e962f3a5e85c71d18af41bdc

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