Malicious PDF — malware analysis report

Static analysis result for SHA-256 74d4ff30c29c52ff…

MALICIOUS

PDF

34.8 KB Created: 2021-07-01 15:15:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 614300bd573d2c34759204098179727b SHA-1: 8bf1266a64e588772ff752bb22d5199805756499 SHA-256: 74d4ff30c29c52ff53638dc86633210abb41c3721bd27a380f16625fd8c8adbd
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on subdomains related to educational institutions but appear to be part of a link farm. The primary lure is advertising game hacks and free in-game currency, such as Robux for Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a tactic to drive traffic to potentially malicious download sites. While no scripts were explicitly extracted, the structure and content strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/cheat-roblox-mod-menu-game-hack PDF link annotation
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/hacks-for-roblox-are-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/hack-para-tener-robux-rapido_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/roblox-pets-paradise-hack-script_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/how-to-block-games-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/free-robux-without-checking-if-you-are-a-robot_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/hex-number-gives-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/free-robux-without-survey-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/download-free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-real_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/best-free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/free-robux-site-bz_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/how-use-cheat-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://elearning.man1konselkonda.sch.id/__statics/gudangsoal/files/roblox-admin-hack-v3rmillion_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_off00002f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F28 23172 bytes
SHA-256: 6e541b5b9e4eb9090da5b3f6284bd9b89467d66abcca72358e786bbff6b43cca
font_01_sfnt_off0000623c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623C 19268 bytes
SHA-256: b93bfbe2156b2044619e76b7022108e323c5ba303b8f02055e3010cecf7b8256

Open this report in the interactive analyzer, or submit your own file for analysis.