Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e432d44b3b1bcf2…

MALICIOUS

PDF

32.0 KB Created: 2021-07-06 06:58:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 494cb473cc6519b291a483065fb8825f SHA-1: a9c34cb59252c471a2ca110fd727b345143e043c SHA-256: 9e432d44b3b1bcf24e92ee724e02a5a67c70f4e48b16647fb2bfa92ce6eefd33
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering game hacks and currency generators, indicating a phishing or malware distribution lure. The presence of embedded URLs and the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic strongly suggest the document's intent is to redirect users to potentially harmful content. No scripts were extracted, but the document structure and embedded URLs are sufficient to infer a 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.tw/app/406889139/coin-master-free-coins-generator-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/pokemon-go-no-free-raid-pass_GM1094591345.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-generator-2021-download_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-cheat-shinobi-origin_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-hack-build-a-boat-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-no-download-hack_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_off00002c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3B 21408 bytes
SHA-256: 4b68ee5c2998ce5ec60713cddf1ba1fb7a416227ab9ff58fc2e62007d878b7c1
font_01_sfnt_off00005b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0B 17996 bytes
SHA-256: b02f073a20aa754ccf99b8052f1133ce8264aac68338fa0de914a5f25d31d964

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