Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60156ab395e0dca…

MALICIOUS

PDF

43.9 KB Created: 2021-05-14 11:43:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 211b546cb74756c36d129adfbb823f55 SHA-1: af538f82a6265f579e76409a8e57ce42ce6a99bb SHA-256: c60156ab395e0dcadf48d13e98723275298dfd359fbfad33d798e141945fa43d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "generators". The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-hack-pc-free-game-hack, which is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/coin-master-hack-pc-free-game-hack In PDF document text
    • https://studiodegaetano.it/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://studiodegaetano.it/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • https://studiodegaetano.it/images/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://studiodegaetano.it/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4816 24284 bytes
SHA-256: 388a5b9db0a42df1789cdef45fc57d06759e1e3662d81e3bb8f18a18711d2481
font_01_sfnt_off00007ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA4 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off000089a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A8 18036 bytes
SHA-256: d1e417f8400c4227caca57c80f12745841979f8062967c06e5a64cb2220bf511

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