Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed43274ced2757d2…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 10:22:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c906558e7391b4a44489cb05f0331d19 SHA-1: 69d5beec0bdf9a6ee9a2207853f404d5dfe00a03 SHA-256: ed43274ced2757d2862b62fb988a24d6708848cc5a9d2c259ea12740b89467f2
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 primary lure URL is http://netcdn.co/app/431946152/free-face-roblox-catalog-game-hack. 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 to download further malware or engage in phishing.

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/free-face-roblox-catalog-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-free-robu-without-free-robuxs-apps_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/becoming-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-a-roblox-accounts-2021-on-pc_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-you-get-free-robux-without-pastibein-raw_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-2021-mac_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-gratis-2021-sin-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/apk-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/earn-robuxfree2021_GM431946152.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_off0000307b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307B 22852 bytes
SHA-256: 1f6832f370a7a57980f4436516040bd84ed6b3c6d54a6468e504854006fcc355
font_01_sfnt_off00006413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 18752 bytes
SHA-256: 3947a67a8cf228592393fa2e63312b28b2c377eeaced8f676dd0b3805ee3b2ac

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