Malicious PDF — malware analysis report

Static analysis result for SHA-256 c746518d5b8bc2a3…

MALICIOUS

PDF

48.4 KB Created: 2021-06-07 10:53:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dd16362fb440e9363e7c568896c14341 SHA-1: 09a3bfc02f27b6718a08ab8a2620b75051eb530d SHA-256: c746518d5b8bc2a342529a1bf3638072c9c3642eda8fe0f140c9d52f788f651b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with 'game hack' content. The primary link directs to a site that likely hosts further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.tw/app/431946152/crib-roblox-hacks-game-hack In PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/pubg-uc-earning-app-in-pakistan_GM1330123889.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/pokemon-go-free-raid-pass_GM1094591345.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/tiktok-free-robux-codes_GM835599320.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-free-spins-and-coins-daily-links_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_004_off000051a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A6 32724 bytes
SHA-256: f6f3aee556bcaabe44ca0b537c5f675151432dd152e55c601ff858df899e5e64
font_01_sfnt_off00009af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF1 18300 bytes
SHA-256: bd4c4e226ed06b9dc62d9c59e71cea0a3f67b00bb558f26894b4dac0fa1f76a6

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