Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1c5525609084f3…

MALICIOUS

PDF

36.9 KB Created: 2021-07-04 10:44:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b628062e123ddb37b157f5d188777fd5 SHA-1: 52f306f0526d46b14c172466c484e4e6c0f311a0 SHA-256: 0d1c5525609084f32bc1b6665c35ec45af95d9624114294c5262e5d432ade8dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically advertising 'free generator / game hack' lures. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-link-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links 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 0.9980

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.tw/app/406889139/coin-master-free-coins-and-spins-link-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-models-on-roblox-are-giving-viruses_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-download-free-chip_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-bots_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-codes-september-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/counter-blox-roblox-offensive-exploit-hacks-by-autumn_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-legally-no-offers_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-catalog-items-for-free-roblox-no-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-hack-tool-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/https-iosgodscom-topic-20213projectrobloxhackbeta_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/need-free-spins-for-coin-master_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003879.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3879 23288 bytes
SHA-256: 29359d1bd99ea3dbfb5c3130a4952bf665de3bb2f369d5ad71f4497aa022cd50
font_01_sfnt_off00006d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0D 18520 bytes
SHA-256: 4a00b74065c845a8261d6cc4e101dd5c2a388e973e7fc9ab28e7679a34d9d18b

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