Malicious PDF — malware analysis report

Static analysis result for SHA-256 19cf0f9501e5cc47…

MALICIOUS

PDF

35.3 KB Created: 2021-06-19 01:31:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: fd7c114d8fdfd0a515affaedc981e19e SHA-1: b3625662950c309973f2e53d4621b622df43cd21 SHA-256: 19cf0f9501e5cc4763d3ab504215b3f5a2cec0ac2b56383ffceb2e9885c7dec3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The heuristic firings indicate that the PDF is designed to lure users to these malicious sites, likely for further exploitation or credential harvesting. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.co/app/431946152/roblox-booga-booga-hacks-free-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/giftbux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-robux-hack-generator-survey-and-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pastebin-raw-roblox-change-name-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/funny-tshirts-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-account_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
font_00_sfnt_off00003272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3272 22892 bytes
SHA-256: fe40937b16af77c629e16e20a297c9c0f6c26c0122b02bfd19ecb1007014040f
font_01_sfnt_off000065bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BD 18820 bytes
SHA-256: fe5d3726bb9a460ed747d365d4fb72d867ed9758604c6ebe71b866feef084ac6

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