Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa2e28993164f85…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 11:25:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8a3f48bb66355fc2aa0bcc0507226dc1 SHA-1: 082e6e1b0e4e2ee65237524642deb59c24a60347 SHA-256: 1fa2e28993164f852b1acc265597d2f5801e40e4818e598c74c74926f56954e0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded URLs reinforce this, indicating a social engineering tactic to trick users into visiting a malicious site. No scripts were extracted, but the primary attack vector appears to be a phishing lure within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.tw/app/406889139/coin-master-computer-hack-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-pokemon-go-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-without-a-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/rocash-earn-robux-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-do-u-get-free-random-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/robux-page_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/ispoofer-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/btools-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-promo-codes-december-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-without-purchising-games_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hack-spin-coin-master_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_off00003182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3182 22888 bytes
SHA-256: c02ac15ac26335e8bc8bb4f8f926426e67df859cf9025edd4b7408f2dc23c297
font_01_sfnt_off000064c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C5 18580 bytes
SHA-256: 497b785ebba59e7ca707536904f047f4e5286b620765a069de1dcc264aa1dd4d

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