Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48a67c1bdfe7566…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 15:51:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3b9b2d7fd71194e32ff5e0c313f8d5cd SHA-1: e2ad7886673d78e7f700fc85f20f83aa8b59a6be SHA-256: f48a67c1bdfe7566cf72f62b5a4f4e1bfe0a9ef9ac77e4aaffba7ef62fe2d478
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector, specifically advertising a 'free generator / game hack'. The document body contains the URL http://netcdn.co/app/431946152/i-succ-for-free-robux-game-hack, which is likely the destination for this lure. The presence of embedded URLs and the nature of the lure suggest an attempt to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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/i-succ-for-free-robux-game-hack In PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/hoiw-to-get-anamtion-ack-for-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-free-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/thats-cheating-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-da-hood-hack-or-glitch_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/earn-free-roblox-jailbreak-money_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hackeado-de-cuenta_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-cheat-fly-cheat-tab_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-promo-codes-september-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/fly-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-generator-online-no-survey-no-download_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_off00002f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F59 22772 bytes
SHA-256: 284a67d6106b93fba356e33b35cf16d719fc2d5524d0655f172ce0d332986330
font_01_sfnt_off00006269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6269 18716 bytes
SHA-256: 6c49ea3ad5c5cc80681843f6ff6011adaf62e3779919a0583ff19f3470709481

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