Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1943413fa1dbd49…

MALICIOUS

PDF

38.6 KB Created: 2021-05-13 07:12:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 30b957bb67fed94611e4f6f5cb4536d3 SHA-1: 967105aa5f97c4398a8e23ec8c298d133cfe0556 SHA-256: c1943413fa1dbd4916cc5c93a0c50d72438b77aaa19947ccc08175296baa017d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The primary redirect URL is https://netcdn.xyz/app/406889139/twitter-coin-master-free-spins-game-hack. This indicates a phishing or scam attempt designed to lead users to potentially harmful content or further malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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/406889139/twitter-coin-master-free-spins-game-hack In PDF document text
    • http://gomelavto.by/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-earn_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F7 24472 bytes
SHA-256: 01a4717b9604be33425d9f02adc2f1c3dd131d4ea98cd0658f2369c5aa74183d

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