Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3f4c2517d7b789…

MALICIOUS

PDF

45.0 KB Created: 2021-06-09 13:21:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 153786a15af40e43150ef7c565b53e97 SHA-1: c842636a73e5f35df0d696fc07f60f9b1d9a7ade SHA-256: 1c3f4c2517d7b7892763bd1c865c62214366bc7a5fd8f02d829a93417325d126
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary link directs users to a page promising free Robux, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/robloxlover69-how-to-get-free-robux-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/http-roblox-hack_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/robux-link_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-generator-bc-only_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-tiktok-fans-no-verification-2021_GM835599320.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/vasilis-roblox-hack-exe_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/spins-gratis-coin-master-hoy_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_off00005219.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5219 24932 bytes
SHA-256: ea037a4db17d94f9ec26421aa1257621ec538c972205326e912950dc9c6342a7
font_01_sfnt_off00008ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA5 18800 bytes
SHA-256: d80fda48438c4c9472fee8e5357f1a37bc6047209ae164f26670e42490824cb7

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