Malicious PDF — malware analysis report

Static analysis result for SHA-256 4702fd09002d1ba8…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 08:59:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0ab11e7d6a247c75b0e8d070ebbd1dfc SHA-1: 4905195260374a3e3ba06e4bb3e06ba39692e92e SHA-256: 4702fd09002d1ba8dff449392c09e6224a9360475e27d8be0a28f2426f7ec651
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, which is a common social engineering tactic to trick users into interacting with malicious links. The primary link redirects to a site offering game hacks, which is a known lure for malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user curiosity for malicious purposes, likely leading to a second-stage download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/406889139/how-to-hack-coin-master-with-game-guardian-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/pubg-uc-official-price_GM1330123889.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pgsharp-pokemon-go-free-key_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-game_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/what-tiktok-free-folowers-without-downloading-any-apps_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/freespinandcoin-blogspot-com_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_off00004ff1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF1 24284 bytes
SHA-256: adddc68089372e100172dde0f47e069602aea8571f48ecdbdffc3753db32246c
font_01_sfnt_off00008715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8715 18820 bytes
SHA-256: 271f56e5583a9eb4eabcfb17247134c699364ce213ea57bc97ca323676873a95

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